Question

one angle of a quadrilateral is 135 degree and other 3 angles are equal find the measure of the Other 3 angles

Answer 1

Let 3 other angles are x each 

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We know, sum of angles of a quadrilateral = 360 

135 + x + x + x = 360 

135 + 3x =360 

3x = 360 - 135 

3x = 225 

x = 225/3 

x = 75 

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Measure of other 3 angles = 75 each



i hope this will help you

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Answer 2

One angle=135 degree
Let other three angles be x
So ,
135+x+x+x=360
135+3x=360
3x=350-135
3x=225
x=75

Therefore ,
Other three angles are 75 degree