Respuesta :

Answer:

x = 20

Step-by-step explanation:

The triangle is isosceles ( 2 congruent sides )

Hence the base angles are congruent, thus

3x = 60 ( divide both sides by 3 )

x = 20

Megan9912
Every angle is the same so you know what the angle is because in one corner there is a 60 degrees since every angle is 60 degrees and one corner has 3x all you have to do is 60/3 to find x and 60/3 = 20 so x = 20