Question

the measure of three angle of a quadrelateral is 30° 70° and 100° find out measure of fourth angle
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Answer 1

Answer:

360-(200 ) = 160

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Answer 2

Answer:

property of a quadrilateral

sum of all angles in a quadrilateral is 360°

let the unknown angle be x.

30+70+ 100+ x= 360°

200+x= 360°

x= 360- 200

x= 160°