Respuesta :

marybrownie36

Answer:

A) 26°

Step-by-step explanation:

In quad ABCD

C = 90°

B = 2y

A = 180 - 68

D= 180 - (y+48)

In a quad sum of all angles = 360°

therefore,

A + B + C + D = 360°

90 + 2y + 360 - 68 - y - 48 = 360

90-116+y = 0

y = 26°