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全等三角形
Author:
Pokman Cheng
SSS
GeoGebra
ASA
GeoGebra
SAS
GeoGebra
RHS
GeoGebra
WRONG: SSA
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
柱體建築師
錐體建築師
【案例】2013年安徽高考15题
Discover Resources
special
二次函數的圖形
斯坦納-雷米歐司(Steiner-Lehmus)定理證明三
Example Generator (height of building)
tan90
Discover Topics
Cylinder
Step Functions
Real Numbers
Subtraction
Diagrams