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交錯弓形的圓周角
Author:
Y.W. Liu
GeoGebra
New Resources
三位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
第八周作业
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
Discover Resources
找出圖形- T的周界
Area between two curves
拋物線2--焦點法
错觉多边形
Solve ax + b = c | 解方程（樣式： ax + b = c ）
Discover Topics
Means
Division
Geometric Transformations
Natural Numbers
Statistics