Respuesta :
The midsegment is half the length of the base. So the base = 2*4 = 8 in.
Since it is an isosceles triangle, the other two sides are equal in length.
Perimeter = sum of two equal sides + base = 20 in.
2x equal side + 8 = 20
equal side = 12/2 = 6
Each of the equal sides = 6"
mid-segment - mid-point on the two sides
smaller triangle w/ mid-segment is similar to the original triangle
the third side of original triangle=mid-segment *2/1
=8
two sides + third side=perimeter=20
two sides=20-8=12
each of the two equal sides=6"
