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Spotlight 探射燈
Author:
Alex CHIK
Move the orange points and the blue point. Observe the light. 移動三個橙色點或藍色點,觀察燈光的改變。
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
算柱 (兩位數)
兩位數除以一位數(二)
找出對稱軸
拼砌四邊形
柱體建築師
Discover Resources
圖示初小乘數
课题
Angle (Extended 1)
rotational symmetry_2
平行線的斜率
Discover Topics
Incircle or Inscribed Circle
Step Functions
Circumcircle or Circumscribed Circle
Root
Polygons