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2006-4-28
Make a fold on half of a square paper, the first step for folding a regular hexagon or regular pentagon.
060428a_worksheet.ggb
060427b2.html
060427b2_worksheet.ggb
Compare volume of a hemisphere with a cone and cylinder of same base and height.
Fold to make a bisector of a triangle
060428b_worksheet.ggb
Exploring a bisector of a triangle
060428c_worksheet.ggb
Other resources on Regular and Semi-regular Solids