[" Q30.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

The locus of vertices of all isosceles triangles having a common base.

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 :

The altitude from the vertex bisect the base in an isosceles triangle