Answer:
80.84
Step-by-step explanation:
A isosceles triangle is a triangle who has two sides of the same length
The answer is that s = 55/42.
Here's how to solve it
X = 4(180 - x)
x = 720 - 4x
4x + x = 720
5x = 720
x = 720/5
x = 144
180 - x =
180 - 144 =
36
the measure of the angle is 144...the measure of its supplement is 36