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Sum of Interior Angles of Polygons 多邊形內角和
Author:
Alex CHIK
Topic:
Angles
,
Polygons
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
AI 訓練教室
sanjiaohanshu
找出對稱軸
算柱 (兩位數)
Nested spiral octagon
Discover Resources
[S2] a revised version of Jane’s GeoGebra file (modified by the author)
reflection of tetrahedron
乘法公式
Equal arcs, equal angles, equal chords
角錐及展開圖
Discover Topics
Similarity Transformation or Similarity
Symmetry
Arithmetic Operations
Straight Lines
Parametric Curves