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circumcenter and incenter
作者：
Joker119
GeoGebra
最新資源
Focus and Directrix
Mondrian's Puzzle
Regular Polygons and Equivalent Triangles
bewijs stelling van Pythagoras
z`]]
探索資源
Conics in red
unit 4 project
copy angles
October 2
Activity 3: To find relationship between angle at centre and angle at circumference in a circle
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