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相似三角形
Author:
vincent21891
Topic:
Similar Triangles
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兩組對邊相等的四邊形
三位數除以一位數（二）
找出對稱軸
判斷球體
球體建築師
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多項式
No. 7 of Exercise 12C
雙曲幾何
圆心角和圆周角
立體三角測量(例六)
面積題 E
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Optimization Problems
Statistics
Piecewise Functions
General Quadrilateral
Quadratic Functions