An isosceles triangle has two equal sides and the two angles opposite those sides are equal.

等腰三角形有两条边相等且这两边所对的角也相等.

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A square may be defined as a rectangle with four equal sides.

正方形可定义为具有4条等边的矩形。

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A square may be defined as a rectangle with four equal sides.

正方形可定义为具有4条等边的矩形。

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