If the base of an isosceles triangle is produced on both sides, prove that the exterior angles so formed are equal to each other.

If the base of an isosceles triangle is produced both ways, show that the exterior angles so formed are equal.

If the base of an isosceles triangle is produced both ways, show that the exterior angles so formed are equal.

If the sides of a triangle are produced in an order, show that the sum of the exterior angles so formed is 360°.

If the sides of a triangle are produced in order, then the sum of the three exterior angles so formed is

The side B C of a triangle A B C is produced on both sides. Show that the sum of the exterior angles so formed is greater than /_A by two right angles.

If the bisector of an angle of a triangle bisects the opposite side, prove that the triangle is isosceles.

If the bisector of an angle of a triangle bisects the opposite side,prove that the triangle is isosceles.

If a line is drawn parallel to the base of an isosceles triangle to intersect its equal sides, prove that the quadrilateral, so formed is cyclic.