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perpendicular at a point on a line
作者：
Sarah Sheley
GeoGebra
最新資源
Graph of Slopes of Tangent Lines
bewijs stelling van Pythagoras
Row and Column Views of Systems of Linear Equations
Sum of Squares: Proof without Words
The Gardener's Circle
探索資源
pave droit volume
Angle Pairs
PEA Math 2 (2018) #15b
Circle tangent to two given circles
Algebra Tiles
angles mesure
探索主題
矩形
平面
黎曼和（Riemann Sum）
算術運算
直方圖