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.

(i) A triangle cannot have more than one right angle.

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.