In `DeltaABC`, the bisector AD of A is perpendicular to side BC Show that AB = AC and `DeltaABC` is isosceles.

If in a /_\ABC , the bisector AD of angle A is perpendicular to side BC then /_\ABC is______ triangle.

In DeltaABC , AD is the perpendicular bisector of BC (See adjacent figure). Show that DeltaABC is an isosceles triangle in which AB = AC.

If the median of DeltaABC through A is perpendicular to AB then tan A+2tanB=

In /_\ABC, AD is a perpendicular to BC.S.T iii) AB + AC gt BC

In triangleABC , AD the perpendicular bisector of BC (see given figure). Show that triangleABC is an isosceles triangle in which AB=AC.

In /_\ABC , AD is the perpendicular bisector of BC. Show that /_\ABC is an isosceles triangle in which AB=AC.

In Delta ABC , internal angle bisector of angle A meets side BC in D. DE bot AD meets AC in E and AB in F. Then

AD and BC are equal and perpendiculars to a line segment AB. Show that CD bisects AB.

In DeltaABC, D, E and F are the midpoints of sides AB, BC and CA respectively. Show that DeltaABC is divided into four congruent triangles, when the three midpoints are joined to each other. (ΔDEF is called medial triangle)