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海伦公式分步证明
Author:
math Ku
Topic:
Area
,
Similar Triangles
,
Triangles
Prove Heron's Formula
GeoGebra
New Resources
【案例】2013年安徽高考15题
探究三角形的全等條件
圓周公式的應用
空间中两直线的位置关系
祖冲之的期望：内棋与外棋
Discover Resources
三角形面積與內切圓半徑
龍騰4_1-1講段8
曲柄搖桿接雙搖桿
gjc090c21內切圓的圓心
密鋪圖形
Discover Topics
Fractal Geometry
Random Variables
Dilation
Vectors
Ratios