Respuesta :

josshyaby

Answer:

C

Step-by-step explanation:

The sum of angle is 360°

113 + 90 + 6X + 11 + 3+7X = 360

217 + 13X = 360

13X = 360 - 217

13X = 143

X = 143/13

X = 11°

<R = 3 + 7X = 3 + 7(11) = 3 + 77 = 80°

layla9868
D) 90 degrees because is an right angle and an right angle is 90 degrees less then 90 degrees is an acute angle