Protractor Angle Demo

Autor: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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Isosceles Right Triangle
Deciding How New Information Affects Probability
Calculating Arc Length, Radius, and Central Angle
Marion's Theorem
Writing and Graphing Proportional Relationships (k>0)

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