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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
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
Nested spiral octagon
找出對稱軸
Discover Resources
鉛筆的長度
生活中的平面圖形關係─全等
音調與空氣柱
拋物線軌跡(內切型)
quiz 9.1 2(d)
Discover Topics
Parabola
Variance
Plane Figures or Shapes
Intersection
Isosceles Triangles