Question

Three angles of a quadrilateral measure 30o , 40o and 50o
. Compute the measure of the fourth
angle.

Answer 1

the total angle sum of a quadrilateral is 360 degrees.

therefore the total sum of the given angles  is (100+30+70) degrees = 200 degrees.

hence the fourth angle would be 360-200 = 160 degrees.

Hope it helps you ✌

Answer 2

Answer:

in a quad sum of all 4 angles is 180°

let the 4th angle be x

30°+40°+50°+x=360°

120°+x=360°

x=360°-120°

x=240°

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