Question

Three angles of a quadrilateral are 100 , 90

and 110

what is the fourth angle ?

a) 30

b) 120

c) 160

d) 60​

Answer 1

Answer:

option D will be the answer

Answer 2

$\huge{\overbrace{\rm{\purple{d)60°}}}}$

Let the unknown angle be z.

z+110°+100°+90°=360° [All angles in a quadrilateral add upto to 360°]

z=360°-300°

z=60°

Hope it helps you dear !!

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