平行四边形和梯形的认识

Sep 02, 2014

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平行四边形和梯形的认识. 四平市铁东区石岭镇中心小学校黄玉琢. 用两组线可以组成下列图形：. 3. 1. 2. 4. 6. 5. 两组对边分别平行的四边形叫做平行四边形。. 只有一组对边平行的四边形叫做梯形。. 分类. 2. 1. 4. 3. 6. 5. 7. 生活中的平行四边形. 平行四边形的运用. 生活中的梯形. 想一想长方形、正方形和平行四边形有什么相同点和不同点？. 长方形和正方形的两组对边也分别平行，它们是特殊的平行四边形。. 下面的图形哪些是平行四边形，哪些是梯形？. 2. 1. 3. 5.

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平行四边形和梯形的认识

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平行四边形和梯形的认识 四平市铁东区石岭镇中心小学校黄玉琢
用两组线可以组成下列图形： 3 1 2 4 6 5
两组对边分别平行的四边形叫做平行四边形。
只有一组对边平行的四边形叫做梯形。
分类 2 1 4 3 6 5 7
生活中的平行四边形
平行四边形的运用

生活中的梯形
想一想 长方形、正方形和平行四边形有什么相同点和不同点？
长方形和正方形的两组对边也分别平行，它们是特殊的平行四边形。长方形和正方形的两组对边也分别平行，它们是特殊的平行四边形。
下面的图形哪些是平行四边形，哪些是梯形？ 2 1 3 5 4
再见

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