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鏡面反射光線
Author:
紀老師
鏡面反射光線的動畫 入射角=反射角
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（一）
直角坐標平面上的旋轉變換
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
Discover Resources
N邊形滾動
Angle in Alternate Segment 1
Locus: Fixed Distance From Straight Line
angle at the same segment
开关灯游戏
Discover Topics
Indefinite Integral
Random Variables
Trigonometric Functions
Vectors
Median Line