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How to draw a pentagon with ruler and compasses?
Author:
Pythoner
GeoGebra
New Resources
平行線的斜率
探究三角形的全等條件
球体的体积推导
圓的切線方程
球体的体积推导（优化版）
Discover Resources
史坦納圓鍊 (Steiner Chain)
拿破侖定理(內拿破侖)證明三
圓的基本性質
線性規劃例6
函数作图工具的副本
Discover Topics
Bar Chart or Bar Graph
Curve Sketching
Median Value
Tree Diagrams
Power Functions