Angles the three angle `BAC ,ABC and ACB` are called the angles of `Delta ABC.`

ANGLES The three angles -BAC-ABC and -ACB are called the angles of Delta ABC .

Elements or parts the three sides AB BC CA and three angles A B C of a Delta ABC are together called the six parts of elements of the Delta ABC.

Let O be the in-centre of a triangle ABC and D be a point on the side BC of Delta ABC , such that OD_|_BC If angle BOD=15^(@) , then angle ABC=?

In triangle ABC , angle C is the greatest angle , then

If the angles of a triangle ABC are in A.P. then