Angle sum of a quadrilateral

Autor:mathstobie, amylava

Students move the points around to investigate the angle sum of a quadrilateral. There is also an option to show whether the quadrilateral is convex or concave.

Novos Materiais

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Angle Addition Postulate (V2) - Integer Solutions
Congruent Figures
Pythagorean Theorem: Extension Exercises

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