Question

The perimeter of the triangle below is .A 54 B 66. C 44. D 74. E 36.
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Answer 1

The two bottom angles are the same which means the two sides are also the same..

Perimeter = 12 + 12 + 30 = 54

Answer: A.54

Answer 2

54

Explanation:

This is an isosceles triangle since the base angles are the same. That means the unlabeled side must be 12

P = s1 + s2+s3 where s is the side

P = 12+12+30

P = 54