Prove using vectors: The median to the base of an isosceles triangle is perpendicular to the base.

Prove by vector method that median to the base of an isoscels triangle is perpendicular to the base.

Prove the following by vector method. Median to the base of an isosceles triangle is perpendicular to the base.

By vector method show that , median to the base of an isocales triangle is perpendicular to the base .

If the median to the base of a triangle is perpendicular to the base,then triangle is isosceles.

If the median to the base of a triangle is perpendicular to the base then triangle is isosceles.

If the median to the base of a triangle is perpendicular to the base then triangle is isosceles.

If the median to the base of a triangle is perpendicular to the base, then triangle is isosceles.

Prove that the medians to the two equal sides of an isosceles triangle are equal.

If D is a point of the base BC an isosceles triangle ABC such that AD is perpendicular to AC, then a=