Question

find the DEC in the given figure​

Answer 1

Answer:

38°

Step-by-step explanation:

we have to find angle ECD first:-

180°-110°=70° = angle BAC ( linear pair angle )

180°- ( 50°+70° ) = 60° = angle ACB ( sum of all the interior angles of triangle is 180°)

180°-60° = 120° = angle ECD ( because angle ACB and ECD are linear pair angles )

180°- ( 22°+120°) = 38° = angle DEC

you can check the answer if it is correct or not :-

22°+38°+120° = 180°