Respuesta :
Answer:
x=52
Step-by-step explanation:
The exterior angle of the triangle is equal to the sum of the opposite interior angles
72 = 20+x
72-20 = 20+x-20
52 =x
Answer:
x=52
Step-by-step explanation:
The exterior angle of the triangle is equal to the sum of the opposite interior angles
72 = 20+x
72-20 = 20+x-20
52 =x