Protractor Angle Demo

Autore:rcsellers

Just a quick demonstration of why there are two scales on a protractor. Many students don't seem to have a good conceptual grounding in how they should reason through which scale to use.

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Building Trapezoids with Set Areas
Focus and Directrix
Mondrian's Puzzle
Building Parallelograms with Set Areas

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grecas
Find center of rotation
Quiz
Perpendicular and Angle Bisectors
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