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特殊四边形的复习

特殊四边形的复习. 有一个角. 有一组邻. 边相等. 是直角. 有一组邻. 有一个角. 边相等. 是直角. 从一般到特殊. 研究几何知识的一般规律 :. 有一个角是直角的菱形叫做 正方形 。. 有一组邻边相等的矩形叫做 正方形 。. 有一个角是直角一组邻边相等的平行四边形叫做 正方形 。. 思考:. 已知直角三角形 ABC, ∠C=90 0 ,能否画一个正方形 CDFE, 使点 D 落在 BC 上,点 E 落在 AC 上,点 F 落在 AB 上,请说出画法。你能证明你所画的确实是正方形吗?. 有一个角是直角的菱形叫做 正方形 。.

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特殊四边形的复习

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  1. 特殊四边形的复习

  2. 有一个角 有一组邻 边相等 是直角 有一组邻 有一个角 边相等 是直角 从一般到特殊 研究几何知识的一般规律: 有一个角是直角的菱形叫做正方形。 有一组邻边相等的矩形叫做正方形。 有一个角是直角一组邻边相等的平行四边形叫做正方形。

  3. 思考: 已知直角三角形ABC, ∠C=900,能否画一个正方形CDFE,使点D落在BC上,点E落在AC上,点F落在AB上,请说出画法。你能证明你所画的确实是正方形吗? 有一个角是直角的菱形叫做正方形。 有一组邻边相等的矩形叫做正方形。 有一个角是直角一组邻边相等的平行四边形叫做正方形。

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