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同心圓
Author:
許清惟
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
第八周作业
球体的体积推导
畫出對稱圖形
拼砌四邊形
Discover Resources
直線方程
angle between lines
單一族群的競爭理論
圓,圓柱,圓錐,球
圓形墊圈 (Washer) 2
葛爾崗點
Discover Topics
Symmetry
Fractal Geometry
Diagrams
Congruence
Rotation