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勾股定理（几何原本）的副本
Author:
夜雨嘀嗒
Topic:
Pythagoras or Pythagorean Theorem
GeoGebra
New Resources
直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
算柱 (兩位數)
画直线等分三角形的面积
Discover Resources
Quiz on Polar Coordinates (1) 極坐標測驗1
tessellation design
Demo
柱體頂棱
五上-CP4-第三节平行四边形面积1
Discover Topics
Orthocenter
Standard Deviation
Congruence
Isosceles Triangles
Planes