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椭圆画法2定义法
Author:
冯伟冀
GeoGebra
New Resources
近似值：有效數字
sanjiaohanshu
長方體平面投影 (Codex版)
Nested spiral octagon
算柱 (兩位數)
Discover Resources
Circle
测试 = =
圖形周界_H
grass eating
正N边形在圆内的滚动
Discover Topics
Ellipse
Confidence Interval
Congruence
Probability
Piecewise Functions