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正弦定理的验证
Author:
junfeilx
GeoGebra
New Resources
球體建築師
拼砌四邊形
兩位數除以一位數（二）
錐體建築師
画直线等分三角形的面积
Discover Resources
isosceles triangle construction
柱體建築師 1
拋物線?
圓錐曲線 vs.雙曲線定義式
正四面體與正八面體
Discover Topics
Trigonometric Functions
Congruence
Ratios
Planes
Prism