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Area of triangle using 0.5bs sinA
Author:
Pong Hai Lin
GeoGebra
New Resources
兩位數除以一位數（一）
算柱 (兩位數)
GeoGebra笔记功能体验课件
拼砌四邊形
第八周作业
Discover Resources
最大三角形面積
三角函數圖解
Making Graph paper
CIRCLE
勾股定理的直观证明（义务教育数学 新课标-例82）
Discover Topics
Constructions
Statistics
Linear Programming or Linear Optimization
Quadrilaterals
Matrices