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- Euklid-Wurzel
- Meaning of LCM 最小公倍數的意義
- Bug IntersectElipseSemicircle01
- Opposite angles of inscribed quadrilateral are congruent
- An excircle of a triangle is externally tangent to a side of the triangle and tangent to the extensions of the other two sides. Each triangle has three excircles.
- Problem 2.2B
- triangles