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蝴蝶定理
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
球體建築師
四邊形的特性
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
拼砌四邊形
Discover Resources
兩圓及交弦
congruent (SSA, RHS)
纏繞SEQUENCE版
圆锥曲线
烟囱
Discover Topics
Hypergeometric Distribution
Indefinite Integral
Combinatorics
Right Triangles
Circumcircle or Circumscribed Circle