Question

ABCD is quadrilateral in which AD is parallel to BC. If angel A is 110° and angel D is 130°, what are measures of other two angels?

Answer 1

Angle sum property of a quadrilateral is 360

• angle A is 110
• let angle B be y
• let angle C also be y
• angle D is 130

so angle A+B+C+D = 360

110+y+y+130 = 360

y+y+240=360

2y+240 = 360

2y=360 - 240

2y = 120

y=120÷2

y=60

so each angle is 60

Angle A = 110

Angle B= 60

Angle C=60

angle D=130

hope this was helpfull

Answer 2

Answer:

B = 70 Degree

C = 50 Degree