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橢圓的切線作圖
Author:
紀延平
GeoGebra
New Resources
錐體建築師
兩組對邊相等和有直角的四邊形
球体的体积推导
兩位數除以一位數（一）
柱體建築師
Discover Resources
AREA
Remainder Theorem and Factor Theorem(餘式定理及因式定理)
線性規劃(半平面)
小船平移2
开关灯游戏 5×3
Discover Topics
Quadratic Functions
Diagrams
Circumcircle or Circumscribed Circle
Sine
Angles