Question

the three angles of quadrilateral are 55°,85°,and 70 °find the fourth angle​

Answer 1

Answer:

55+85+70+x=360

210+x=360

x=150

Answer 2

Answer:

▪Sum of angles of a quadrilateral is 360°

let the fourth angle be 'y'

55+85+70+y=360

210+y=360

y=360-210=150°

☆Fourth angle is 150°

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