Respuesta :

jerryguo2282769

Answer:

27

Step-by-step explanation:

the angle is sitting on a right angle because rhombuses have 4 right angles

90 = 4x-18

108 = 4x

x = 27

toonami2814bc

Answer:

4x-18=90°

CLT

4x=108

divide by 4

4x/4=108/4

x= 27°