Question

if three angle of a quadrilateral are each equal to 75find the fourth angle​

Answer 1

Answer:

sum of all angles of a quadrilateral= 360°.

sum of 3 angles= 75+75+75=225°. so the fourth angle is 360°-225°= 135°.

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Answer 2

Answer:

135

Step-by-step explanation:

let the fourth angle be x

A.T.Q

75+75+75+x=360(Angle sum property of quad)

=225+x=360

×=360-255

×=135

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