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常见三角形
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什么是二维矢量?
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45-45-90直角三角形:边之比
2
30-60-90直角三角形:边之比
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Scalene, Isosceles, and Equilateral Triangles
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一些几何不等式
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常见三角形
锐角三角形、直角三角形和钝角三角形
等腰三角形中的特殊线条
Scalene, Isosceles, and Equilateral Triangles
什么是二维矢量?
一些几何不等式
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