A helpful scientific calculator that runs in your web browser window.
Holt Online Learning
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A page with links for properties of circles and different types of polygons. Each link has great visuals with clear markings, definitions, and formulas.
Cool Math
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Tell whether the figure is a polygon. If not, tell why. If it is, tell if its concave or convex.
Tutor.com
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This website will lay out the names of polygons according to the number of sides.
AAA Math
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