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正多边形
Author:
浅蓝色
GeoGebra
New Resources
圓的基本性質
活动三:应用性质
第八周作业
双心四边形
第八周作业3
Discover Resources
四邊形的「等角分點」
電子幾何條(2014)
鉛筆畫圓
三角形重心軌跡(動點在三圓上)
量角器
Discover Topics
Surface
Linear Equations
Geometric Transformations
Equations
Straight Lines