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课堂小练习（根据方程画直线）
Author:
朱亮
GeoGebra
New Resources
Untitled
Visualizing the Pythagorean Identity with Sine and Cosine
bewijs stelling van Pythagoras
Average Value of a Function
函數的單調性
Discover Resources
Direct Variation Practice
mass freely dangling from a string supported by two pegs II
WEKSTEIN_Midpoint quadrilaterals #7
Ladder slider
Discover Topics
Geometry
Trapezoid
Percentages
Boxplot
Quadratic Functions