Question

Three angles of a quadrilateral are 50° 70 °and 100° .what is the measure of the

fourth angle​

Answer 1

Let,

ABCD be the quadrilateral where

angle A = 50°

angle B = 70°

angle C = 100°

angle D = x

Since,

sum of angles of a quadrilateral = 360°

angle A + angle B + angle C + angle D = 360°

50° + 70° + 100° + x = 360°

120° + 100° + x = 360°

220° + x = 360°

x = 360° - 220°

x = 140°

THEREFORE, the measure of angle is 140°

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Answer 2

Answer:

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