Three vertices of triangle ABC are A(–1, 11), B(–9, –8) and C(15, –2). The equation of angle bisector of angle A is

The vertices of a triangle are A(3, 7), B(3, 4) and C(5, 4). The equation of the bisector of the angle /_ABC is

The vertices of a triangle are A(-1,-7),B(5,1) and C(1,4). The equation of the bisector of the angle ABC

The vertices of a triangle are (A(-1,-7),B(5,1), and C(1,4). The equation of the bisector of /_ABC is

The vertices of the triangle ABC are A(1, 2), B (0, 0) and C (2, 3), then the greatest angle of the triangle is

The vertices of a triangle are A(0, 0), B(1, 0) and C(0, 2). The point of intersection of bisectors of internal angles is

The vertices of triangle ABC are A (4, 4), B (6, 3), C (2, -1), then angle ABC is equal to