



 
Hi Victoria, This is probably easiest if you consider the sum of the measures of the 5 exterior angles. The sum of the measures of the 5 exterior angles and the 5 interior angles is 5 × 180^{o} = 900^{o}. Subtract the sum of the measures of the 5 exterior angles from 900^{o} to find the sum of the measures of the 5 interior angles. You know that the sum of the measure of two of the interior angles is 240^{o}. How much is left to distribute among the 3 remaining angles? Penny  


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