The bisectors of base angles of a triangle cannot enclose a right angle in any case.

Show that the bisectors of the base angles of a triangle can never enclose a right angle.

If the bisectors of the base angles of a triangle enclose an angle of 135^(0) ,prove that the triangle is a right triangle.

If the bisectors of the base angles of a triangle enclose an angle of 135^0, prove that the triangle is a right triangle.

If the bisectors of the base angles of a triangle enclose an angle of 135^0, prove that the triangle is a right triangle.

If the bisectors of the base angles of a triangle enclose an angle of 135^(0) ,prove that the triangle is a right triangle.

Prove that the bisectors of the angles of a linear pair are at right angle.

Show that the bisector of vertical angle of an isosceles triangle bisects the base at right angles.

Show that the bisector of vertical angle of an isosceles triangle bisects the base at right angles.

The bisectors of the acute angles of a right triangle meet at O. Find the angle at O between the two bisectors.