If two isosceles triangles have a common base, prove that the line joining their vertices bisects them at right angles.

If two isosceles triangles have a common base, prove that the line segment joining their vertices bisects the common base at right angles.

If two isosceles triangles have a common base, prove that the line segment joining their vertices bisects the common base at right angles.

ABC and DBC are two isosceles triangles on the common base BC. Then :

ABC and DBC are two isosceles triangles on the common base BC. Then :

triangle ABC and triangle DBC are isosceles triangles on the same base BC. Prove that line AD bisects BC at right angles

triangle ABC and triangle DBC are isosceles triangles on the same base BC. Prove that line AD bisects BC at right angles

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

If bisector of a vertical angle bisects the base then triangle is :

Prove that the straight line joining the vertex of an isosceles triangle to any point in the base is smaller than either of the equal sides of the triangle.