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变化的三角形的旁心.许兴华数学
Author:
许兴华数学
Topic:
Geometric Transformations
,
Triangles
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
第八周作业
拼砌四邊形
三位數除以一位數（一）
錐體建築師
Discover Resources
Ambiguous Cylinder Illusion
Pokemon quiz (daliy)
曲面
測試繪本
國旗
Discover Topics
Similar Triangles
Cube
Coordinates
Linear Programming or Linear Optimization
Conic Sections