Question

In quadrilateral ABCD, angle A=angle B=80 and angle=110. Find angle d​

Answer 1

Answer:

90°

Step-by-step explanation:

measures of the quadrilateral: a= b= 80

                                                  c= 110

                                                  d= x

thus, sum of measures of angles= 360

80 + 80 + 110 + x = 360

270 + x = 360

x= 360 - 270= 90

angle d= 90