In a triangle ABC, AD is the median drawn on the side BC is produced to E such that `AD = ED` prove that ABEC is a parallelogram.

In Delta ABC , AD is the median and PQ || BC . Prove that PE = EQ

triangleABC is an isosceles triangle in which AB= AC. Side BA is produced to D such that AD = AB. Show that angleBCD is a right angle.

Delta ABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB. Show that BCD is a right angle.

In an equilateral triangle ABC , D is a point on side BC such that BD = 1/3 BC . Prove that 9 AD^(2)=7AB^(2) .

In an equilateral triangle ABC, D is a point on side BC such that BD = 1/3 BC . Prove that 9 AD^(2) = 7 AB^(2) .

In an equilateral triangle ABC, D is a point on side BC such that BD = (1)/(3) BC. Prove that 9 AD^(2) = 7 AB^(2) .

AD is the median on BC. Find the coordinates of the point D

In a triangle ABC, E is the mid - point of median AD. Show that ar (BED) =1/4 ar (ABC)

In a triangle ABC, E is the mid-point of median AD. Show that ar (BED) = (1)/(4) ar (ABC).

In an equilateral triangle ABC, D is a point of BC such that 4BD = BC. Prove that 16AD^(2)=13BC^(2) .