Question

Find the angle measure x in the following figures

Answer 1

Answer:

80°

Explanation:

the sum of angles of a quadrilateral is 360 degree

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Answer 2

Answer:

80

Explanation:

Sum of angle of a quadrilateral =360

a+b+c+d=360

a=40,

b=140,

c=100,

d=x

40+140+100+x=360

280+x=360

x=360-280

x=80

Therefore, angle x is 80