Question

Three angles of a quadrilateral are 90, 120 and 55. What is the measure of the 4th angle?​

Answer 1

Answer:

95

Step-by-step explanation:

90+ 120+ 55 + 4th aangle = 360

265 + 4th angle = 360

4th angle = 360-265

4th angle = 95

Answer 2

Answer:

95

let the 4 th angle be x

90+120+55+x=360(angle sum property of a quadrilateral)

that is sum of all 4 angles is equal to 360

265+x=360

x=360-265

x=95

therefore measure of the 4th angle is 95 degree

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