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勾股定理：射影无字证明
Author:
math Ku
Topic:
Geometry
,
Pythagoras or Pythagorean Theorem
GeoGebra
New Resources
画直线等分三角形的面积
畫出對稱圖形
兩位數除以一位數（二）
兩位數加法
兩組對邊相等和有直角的四邊形
Discover Resources
內次擺線
代數運算：外心座標
展開基本
P1 1st Maths
三角形
Discover Topics
Real Numbers
Similar Triangles
Piecewise Functions
Diagrams
Indefinite Integral