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 joining their vertices bisects them at right angles.

Which two triangles have angle B as common?

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

Axis the line segment joining the centres of two bases is called the axis of the cylinder.

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

The equation of the line bisecting the line segment joining the points (a,b) and (a',b') at right angle,is

If in an isosceles triangle, each of the base angles is 40°, then the triangle is

Find the equation of the plane which bisects the line segment joining the points A(2,3,4) and B(4,5,8) at right angles.

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

A square is incribed in an isoceles right triangle, so that the square and the triangle have one angle common. Show that the vertex of the sqare opposite the vertex of the common angle bisects the hypotenuse.