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Angle Sum in a Triangle
Author:
ksarnoff
,
Koo Wing Yan
Topic:
Angles
Angle Sum in a Triangle
GeoGebra
New Resources
異分母分數減法
画直线等分三角形的面积
找出對稱軸
三位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
給柱體一個名字 3
test
Congruent Triangles
拋物線1--焦點法
圓周 (圖形D) 的複本
Discover Topics
Conic Sections
Vectors 2D (Two-Dimensional)
Piecewise Functions
Fractions
Tangent Line or Tangent