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Calculate the value of the unknown angle
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4 votes
Calculate the value of the unknown angle

Calculate the value of the unknown angle-example-1
User Millenion
by
3.4k points

2 Answers

3 votes
Angle B = Angle D
Angle D = 80
Angle A+B+C+D = 360
Angle C = Angle A
Angle A = 2x

80+80+2x+2x = 360
160+4x=360
4x=360-160
4x=200
X=200/4
x=50
User DontVoteMeDown
by
3.6k points
4 votes

Answer:

80+2x=180°{co-interior angle}

2x=180-80

2x=100

x=50°

hope it helps.

User Borovsky
by
3.6k points
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