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弦切角是圓心角的一半
Author:
連琨銘
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數除以一位數（一）
拼砌四邊形
画直线等分三角形的面积
判斷球體
Discover Resources
Trigonometric Ratios: Cosine & Tangent 三角比：餘弦和正切
判斷三角形
翰林B4講p192-例1
Graph of Quadratic Function 二次方程圖像
周界
Discover Topics
Parabola
Linear Programming or Linear Optimization
Trapezoid
Hypothesis Testing
Linear Regression