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廣義三角：tan
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
錐體建築師
兩位數除以一位數（二）
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
異分母分數減法
Discover Resources
YH的GGB_BOOK
畢氏定理動態證明(歐基里得，平形四邊形等面積，應用polyline)
dandan
平行四邊形的高
二年級數學測驗一
Discover Topics
Multiplication
Curve Sketching
Conic Sections
Arithmetic Operations
Expected Value