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
G_Dub
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

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