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比較角的大小3
Author:
cheukyiu813
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
找出對稱軸
兩位數除以一位數（一）
算柱 (兩位數)
Discover Resources
離心率與圓錐曲線
External tangent
圓心
拋物線5--包絡線法
诱导公式六（90°-α）
Discover Topics
Translation
Similar Triangles
Volume
Circle
Parallelogram