Draw a diagram to solve. Penny draws pentagon ABCDE. She finds that LABE measurs 36º. She draws a line segment AF to bisect LBAE. What is the measure of LFAB?
by 
miss_grace
ANSWERS: 3
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Really? This is your question? You seem to just be spouting off letters. Get out of here Blaine the Mono.
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If it's an irregular pentagon, then you'll have to use the cosine rule in terms of AB and FB. If it's a regular pentagon, then angle FAB = 180 - (90+36) = 54 degrees.
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All you need to know is if AB = AE If this is true, then the pentagon is a red herring. You will then have a isoceles triangle EAB and angle ABE equals angle AEB equals 36 Find angle BAE from the angles-in-a-triangle rule and bisect it.
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