ANGLES The three angles `\_ BAC \_ ABC and \_ACB` are called the angles of `DeltaABC`.

ELEMENTS OR PARTS The three sides AB BC CA and three angles \_A \_B \_C of a DeltaABC are together called the six parts or elements of the DeltaABC.

In the figure given, angle BAC : angle ABC = 2:3. Find the measure of angleABC .

In a DeltaABC , angleA+ angle B=125^(@) and angle B+ angle C=150^@ . Find all the angle of Delta ABC.

Exterior angle ACD= 135^@ and /_ABC and /_BAC are in the ratio 3:2 Find all the angles of the triangles

In ABC, if /_B=60^(@),/_C=80^(@) and the bisectors of angles /_ABC and /_ACB meet at a point O, then find the measure of /_BOC .

In a triangle ABC, angle bisector of angle BAC cut the side BC at D and meet the circumcircle of Delta ABC at E , then find AB .AC+DE. AE.

In a Delta ABC, angle C in an obtuse angle . The bisectors of the exterior angles at A and B meet BC and AC produced at D and E respectively . If AB=AD=BE . Find angle ACB .