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Number of right-triangles in a 12-sided Regular-Polygon. (Prime Maths) View |
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Polygons - Geometry for Kids (Smile and Learn - English) View |
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Math Antics - Polygons (mathantics) View |
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Math Antics - Triangles (mathantics) View |
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Regular Polygons Area With Special Right triangles (Elizabeth Jones) View |
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Geometry: Angles/Triangles/Polygons II (Thomas Davis) View |
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How to find the Area of a pentagon (searching4math) View |
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Compass Constructions: Triangle, Hexagon, Dodecagon (Simplifying Math) (Buffington) View |
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How To Calculate The Interior Angles and Exterior Angles of a Regular Polygon (The Organic Chemistry Tutor) View |
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Polygons | What is a Polygon (Math with Mr. J) View |