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棋盤的 L 形覆蓋
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
算柱 (兩位數)
兩位數除以一位數（二）
直角坐標平面上的旋轉變換
Discover Resources
兩圓關係與公切線
Redefining Trigonometry by a Unit Circle
相似三角形證明
複合棒形圖
夾擠定理 (The Squeeze Theorem)
Discover Topics
Algebra
Arithmetic Operations
Piecewise Functions
Combinatorics
Rectangle