Question

The measure of three angles of a quadrilateral are 39 degree, 141dgree and 13dgree Find the fourth angle

Answer 1

The measure of 3 angles of a quadrilateral=39°,141°,13°.

Let the fourth angle be x.

A.T.S

39°+141°+13°+x=360°(angle sum property of quadrilateral)

183°+x=360°

x=360°-183°

x=177°