In a rhombus ABCD, m∠A = 31°. Point O is a point of intersection of diagonals. Find the measures of the angles of triangle ΔBOC. ?

1 Answer
Apr 15, 2018

See below.

Explanation:

angleC=31 opposite angles of a rhombus are equal
So, angleBCO=15.5 diagonals bisect vertices

angleBOC=90 diagonals bisect each other at right-angles

angleOBC=74.5 angle sum of triangle