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三角形的面積
Author:
Methew Mau
Topic:
Mathematics
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數加法
兩組對邊相等的四邊形
異分母分數減法
三位數除以一位數（二）
Discover Resources
regular tetrahedron in a cube
Rotational symmetry examples
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
龜甲
勾股定理（几何原本）的副本
Discover Topics
Cone
Continuity
Multiplication
Kite
Parabola