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fixed arc length and fixed shaded area
Author:
johnmayhk
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
兩組對邊相等的四邊形
拼砌四邊形
兩位數除以一位數（二）
Discover Resources
三角形重心軌跡(動點在三圓上)
什麼是除法?
Graph of tangent
乘法的副本
翰林數學_2下_CH4-1_截線與截角的意義
Discover Topics
Algebra
Optimization Problems
Fractions
Angles
Confidence Interval