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Sue knows that the perimeter of the triangle to the right is 13 inchest can she find the length of the missing side explain?
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Sue knows that the perimeter of the triangle to the right is 13 inchest can she find the length of the missing side explain?

User Corbin
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Yes, the premimeter of a triangle is equal to the sum of all 3 of its sides. She can add the two known sides and subtract the sum from the perimeter. 5+3=8 and 13-8=5. the missing side has a length of 5 inches.
User David Cuthbert
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