The answer is a. 16x+h
Since a triangle is isosceles, its both legs are the same. So, we have two sides and a hypotenuse (a, a, and h)
A midsegment length (m) of a triangle is a half of a parallel bottom leg of the triangle (a):
a = 2m
The perimeter (P) of the triangle is the sum of its sides:
P = a + a + h
It is given:
m = 4x
Since a = 2m, we have:
a = 2*4x = 8x
Therefore, the perimeter is:
P = a + a + h = 8x + 8x + h = 16x + h
