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基測數學100-1-30 ：等腰三角形求角度
Author:
arist
Topic:
Isosceles Triangles
GeoGebra
New Resources
拼砌四邊形
球體建築師
畫出對稱圖形
画直线等分三角形的面积
四邊形的特性
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Angle between Line and Plane
旋转直角
homework
诱导公式三（x轴对称关系）
Discover Topics
Confidence Interval
Distributions
Special Points
Cosine
Polygons