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GeoGebra
GeoGebra Classroom
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Drawing a regular octagon with side GH
Author:
Manuel Santos-Trigo
Relaxing the condition: Drawing a family or regular octagons
GeoGebra
Exploring the area variation of octagons GHIJKPLM & GHOQRSTUG
New Resources
Roman Numerals Bingo
Art and Rotational Symmetry
Flip Flop
Rings of circles
探究由平行線和截線所成的角
Discover Resources
Use area of triangles to prove cosine formula
CER Example1
Line-HarryOMalley-h3b9v7
Day 57 Practice
Finding the area of a triangle in 3-Dimensions.
Discover Topics
Translation
Boxplot
Combinatorics
Median Line
Coordinates