Answer:
Step-by-step explanation:
Perimeter is the length of any closed figure. So for a triangle, the Perimeter is equal to P = a + b + c.
You are told that the triangle is isosceles which means it has 2 equal. You are to presume that the third side is not equal to the other 2.
a= 6
b = 6
c = y
Perimeter = a + b + y
Perimeter = 6 + 6 + y
Perimeter = 12 + y
You cannot go any further. There is no way to reduce it any further.
