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Power of the Point
Interesting Fact about Circumference and Area
Big Circle Q
![Inscribed Pentago](images/formula-quiz/inscribed-pentago.gif)
To solve this probelm, you must remember how to find the meaure of the interior angles of a regular polygon. In the case of a pentagon, the interior angles have a measure of (5-2) •180/5 = 108 °. Therefore, each inscribed angle creates an arc of 216°
Use the inscribed angle formula and the formula for the angle of a tangent and a secant to arrive at the angles
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m
BDE = 72 °
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m
BFC = 72 °
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AGD = ½(144 −72) = 36 °