Question

If the three angles of a quadrilateral are 100 °, 90 °, 110 then what is the fourth angle?​

Answer 1

Answer:

the total angle of a quadrilateral is 360°.

the given three angles are 100 ,90,110

therefore the fourth angle = 360-(100+90+110) ==> 60°

Answer 2

Answer:

let fourth angle of the quadrilateral be x

100° + 90° + 110° + x = 360° ( angle sum property of the quadrilateral)

300° + x = 360°

x = 360° - 300°

x = 60°

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I hope it will help you