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【320199】同步练习-平行四边形和梯形(3)

时间:2025-01-08 00:31:02 作者: 字数:2135字
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作业平行四边形和梯形



同学们注意到了吧,挂衣服用的挂衣架,校园的电动门,商店铺面的推拉门,升降机等,都 可以变形。这些物品就是日常生活中应用平行四边形容易变形这一性质的例子。

1.填 一填。

(1)(   )组对边分别平行的四边形叫做平行四边形。

(2)只有一组对边平行的四边形叫做(   )。

(3)四边形具有(   ) 的性质。[来源:学*科*网Z*X*X*K]

2.把下面的四边形进行分类。



3.画一画。

(1)画出下面平行四边形的高。



(2)画出下面 梯形的高。[来源:学,科,网]



4.(1)两个完全一样的三角形 一定可以拼成一个(   )。

A.平行四边形

B .梯形

C.长方形

(2)平行四边形的内角和是(     )。[来源:学§科§网]

A.180°  B.270°   C .360°

(3)下面图形中,不是轴对称图形的是(   )。

A.长方形    B.圆形[来源:学&科&网]

C.平行四边形 D.等腰梯形

(4)如果一个梯形的上 底缩小为0时,这个梯 形就变成了一个(   )。[来源:学,科,网]

A. 长方形 B.正方形

C.平行四边形 D. 三角形



5.数一 数。

(1)



(  )个平行四边形

(  )个梯形

(2)



(   )个平行四边形

(  )个梯形

6 .分一 分 。[来源:学#科#网][来源:学科网ZXXK]

( 1)把下面的梯形分成一个平行四边形和一个三角形。



(2)把下面的平行四边形分 成两个梯形。





[来源:Zxxk.Com]

参考答案

1.(1)两 (2)梯形 (3)容易变 形

2.平行四边形:②⑤⑥

梯形:①③④⑦⑧

3.略  4.(1)A (2)C (3)C (4)D

5.(1)9 7 (2)5 9

6.略

7.(1) 或  (2)三角形或梯形

数学博览

能 此图只由两个 奇点,其余为偶点且是连通图,可以一笔画完。

[来源:学+科+网Z+X+X+K][来源:学科网]



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作业平行四边形和梯形

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

同学们注意到了吧,挂衣服用的挂衣架,校园的电动门,商店铺面的推拉门,升降机等,都 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 可以变形。这些物品就是日常生活中应用平行四边形容易变形这一性质的例子。

1.填 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 一填。

(1)(   )组对边分别平行的四边形叫做平行四边形。

(2)只有一组对边平行的四边形叫做(   )

(3)四边形具有(   ) <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 的性质。[来源:**Z*X*X*K]

2.把下面的四边形进行分类。

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

3.画一画。

(1)画出下面平行四边形的高。

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

(2)画出下面 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 梯形的高。[来源:,,]

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

4(1)两个完全一样的三角形 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 一定可以拼成一个(   )

A.平行四边形

B <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> .梯形

C.长方形

(2)平行四边形的内角和是( <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>    <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  )[来源:§§]

A180°  B270°  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  C <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 360°

(3)下面图形中,不是轴对称图形的是(   )

A.长方形    <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> B.圆形[来源:&&]

C.平行四边形 D.等腰梯形

(4)如果一个梯形的上 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 底缩小为0时,这个梯 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 形就变成了一个(   )[来源:,,]

A <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 长方形 B.正方形

C.平行四边形 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> D <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 三角形

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

5.数一 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 数。

(1)

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> (  )个平行四边形

(  )个梯形

(2)

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

( <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>   )个平行四边形

(  )个梯形

6 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> .分一 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>[来源:##][来源:学科网ZXXK]

( <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 1)把下面的梯形分成一个平行四边形和一个三角形。

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

(2)把下面的平行四边形分 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 成两个梯形。

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> [来源:Zxxk.Com]

参考答案

1(1)两 (2)梯形 (3)容易变 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

2.平行四边形:②⑤⑥ <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>

梯形:①③④⑦⑧

3.略 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  4(1)A (2)C (3)C (4)D

5(1)9 7 (2)5 9

6.略

7(1) <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a>  (2)三角形或梯形

数学博览

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 能 此图只由两个 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/81/" title="梯形" class="c1" target="_blank">梯形</a> <a href="/tags/82/" title="平行四边形" class="c1" target="_blank">平行四边形</a> <a href="/tags/58/" title="平行" class="c1" target="_blank">平行</a> <a href="/tags/129/" title="四边形" class="c1" target="_blank">四边形</a> 奇点,其余为偶点且是连通图,可以一笔画完。

[来源:++Z+X+X+K][来源:学科网]

 

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