Question

if three angles of quadrilateral are each equal to 75 degree, find the measure of forth angle

Answer 1

The forth angle= 360-75x3= 135°

Answer 2

Answer:

given:

angle 1 = 75

let angle 4 = x

solution

sum of all angles of quadrilateral are 360

degree

angle 1 +2+3+4=360 degree

75 +75+75+x=360

225+x=360

x= 135 degree

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