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0, 90, 180, 270 ± θ 的複本
Author:
Cheng Weishiang
,
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
祖冲之的期望：内棋与外棋
漂亮的摇摆曲线
画直线等分三角形的面积
多邊形的面積
異分母分數減法
Discover Resources
Trigonometric Ratios of Special Angles 特殊角的三角比
ex 8
尤拉線
賺賠：例3的副本
运动的全等三角形.许兴华数学
Discover Topics
Rotation
Ratios
Sine
Straight Lines
Linear Programming or Linear Optimization