Q1 of 95 Page 14

Three angles of a quadrilateral are respectively equal to 110°, 50° and 40°. Find its fourth angles.

Given,


Three angles of quadrilateral = 110∘, 50∘, 40∘


Let fourth angle be = X∘


As we know sum of all angles of a quadrilateral =360∘


So,


110∘+50∘+40∘+X∘ = 360∘


X∘= 360∘ - 200∘=160∘


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