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同位角__垂直平行綫
Author:
chanfushun
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩位數除以一位數（一）
第八周作业
【案例】圆柱体内放置一个大球六个小球
Discover Resources
自我練習
P3 平行與垂直
square and circle
軌跡觀察---圓及正三角形上線段中點
三節棍
Discover Topics
Power Functions
Tangent Line or Tangent
Ratios
Hyperbola
Standard Deviation