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Angle Sum in a Triangle
Author:
Koo Wing Yan
Topic:
Angles
Angle Sum in a Triangle
GeoGebra
New Resources
判斷球體
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
兩位數加法
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前景背景
F.1 Ch10.5 Transformation of Points on the Coordinate Plane
Lesson 2 HW
内外弦图1
Discover Topics
Addition
Coordinates
Similarity Transformation or Similarity
Differential Equation
Geometry