Ms Rishana's class: Investigation of Interior Angles in a Regular Polygon

What is the relationship (and ultimately the equation) between the number of sides of a regular polygon and the interior angle measure.
1) what is the sum of the angles in a triangle?
[br]2) Draw this table in your notebook. What pattern did you see?
3) What is the interior angle measure of an octagon?
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– rishana, justin.brennan, Irina Boyadzhiev

Information: Ms Rishana's class: Investigation of Interior Angles in a Regular Polygon