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三角形有三条边和三个角。
The triangle has 3 sides and 3 angles.
youdao
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一个直角三角形有六部分组成，即三条边和三个角。
A triangle is composed of six parts, three sides and three angles.
youdao
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一个直角三角形有六部分组成，即三条边和三个角。
A triangle is composed of six parts, three sides and three angles.
youdao