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20190530 與平行線有關的角
Author:
Hui Sir
GeoGebra
New Resources
算柱 (兩位數)
三位數除以一位數（二）
兩位數除以一位數（二）
拼砌四邊形
兩位數除以一位數（一）
Discover Resources
角的認識
Spiral Polyskelion
GGB 1104 EX01
hjzx123456
龙形曲线-分形龙
Discover Topics
Scalene Triangles
Logarithmic Functions
Linear Programming or Linear Optimization
Tree Diagrams
Difference and Slope