`A=(2,2)`,`B=(6,3)`,`C=(4,1)` are the vertices of triangle. If `D`,`E` are the mid points of `BC`,`CA` respectively, then `DE` =

In a triangle ABC,D and E are the mid- points of BC,CA respectively.If AD=5,BC=BE=4, then CA=

If in a triangle ABC and D,E are the mid- points of AB and AC respectively,then vec DE is equal to

If in a triangle AB=a,AC=b and D,E are the mid-points of AB and AC respectively, then DE is equal to

let A(vec a),B(vec b),C(vec c) be the vertices of the triangle ABC and D,E,F be the mid point of sides BC,CA,AB respectively.if P divides the median AD in the ratio 2:1 then position vector of P

A(1,3),B(4,-1),C(-8,4) are the vertices of a triangle ABC. If D,E,F divides BC,CA,AB in the same ratio 2:1 then centroid of triangle DEF is

A(6,1) , B (8,2) and C (9,4) are three vertices of a parallelogram ABCD . If E is the mid - point of DC , then find the area of triangle ADE.

ABC is an isosceles triangle in which AB=AC. If D and E are the mid-points of AB and AC respectively,prove that the points B,C,D and E are concylic.