kimmi9311 kimmi9311

07-01-2018
Mathematics

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What is the measureof the vertex angle of an isoceles triangle if one of its baseangles measures 42 and its congruent sides each measure 9cm please express your answer as a number only?

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cdw2014 cdw2014

07-01-2018

All you need to know is that the angles of any triangle add to 180. An isoceles triangle has two sides that are the same length and two angles that are the same. If one of the base angles is 42, that means the other one is also 42.

180 - 42 - 42 = 96

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