For a complete lesson on exterior angles of a regular polygon, go to http://www.MathHelp.com – 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn the definition of a regular polygon, as well as the following formulas related to regular polygons. The measure of each interior angle of a regular polygon is always 180(n – 2)/n degrees, where n represents the number of sides of the polygon. The measure of each exterior angle of a regular polygon is 360/n degrees. Students are then asked to solve problems using these formulas.
I work through 5 examples of verifying trigonometric identities that involve half angle and double angle identities.
I was corrected that what I am trying to prove should not be within the body of the proof. This implies it has already been assumed to be true. So proofs should be shown like this example:
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