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旋转体
Author:
冯伟冀
Topic:
Trigonometry
GeoGebra
New Resources
異分母分數減法
兩組對邊相等的四邊形
畫出對稱圖形
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
Discover Resources
龍騰4_1-1講段9
平移動畫（平移加滑桿）
Apollonius Problem gergonne 1
園內接三角形
門格海綿
Discover Topics
Cone
Quadratic Functions
Geometry
Reflection
Fractions