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一线三直角模型证全等
Author:
陈宜红
Topic:
Constructions
,
Triangles
GeoGebra
New Resources
常见四边形是否是双心四边形
第八周作业2
折扣
中华人民共和国国旗
双心四边形
Discover Resources
Translation 平移變換
testing
托勒密定理推廣到任意四邊形一
滾球平台
Copy of cos, sin 與單位圓
Discover Topics
Rotation
LCM and GCD
Symmetry
Arithmetic Operations
Linear Equations