Question

one angle of quadrilateral is 180 degree and other three angles are equal find the unknown angle​

Answer 1

sum of all angles of quadrilateral is 360

one angle =180

other angle are equal let them be x

x+x+x+180=360

3x+180=360

3x=360-180

3x=180

x=180/3

x=60

therefore other angel=60

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Answer 2

hi there!!!

Solution:

Let the common measure of the angles be x.

now,

x+x+x+180=360°.......( sum of measures of all angles of any quadrilateral= 360°)

3x+180=360

3x=360-180

3x=180

x=180/3=60

hence,

the common measure of the other three equal angles=x=60°

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