Question

three angles of a quadilateral are 75° , 90° and 75°. find the measure of fourth angle​

Answer 1

Ist angle =75°

Ilnd angle =90°

lllrd angle =75°

Sum of angles =360°

Angle l + Angle ll + Angle lll + Angle lV =360°

75°+90°+75°+Angle lV= 360°

Angle lV= 360°- (75°+75°+90°)

Angle lV= 360°-240°

Angle lV = 120°

Hope it helps..

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Answer 2

360-all the angles given