" If "D" is the midpoint of the side "BC" of "Delta ABC" then "AB+AC=

If D is the midpoint of the side BC of Delta ABC then vec(A)B + vec(A)C =

If D be the mid-point of the side BC of Delta ABC, then AB^(2) + AC^(2) = 2BD^(2)+ "….................." .

If D is the midpoint of the side BC of a triangle ABC then bar(AB)^(2)+bar(AC)^(2)=

If D is the mid-point of the side BC of triangle ABC and AD is perpendicular to AC, then

If D is the midpoint of the side BC of a triangle ABC, prove that vec(AB)+vec(AC)=2vec(AD)

If D is the midpoint of the side AB of a triagle ABC prove that vec(BC)+vec(AC)=-2vec(CD)

D is the midpoint of the side BC of Delta ABC . If P and Q are points o AB and on AC such that DP bisects angle BDA and DQ bisects angle ADC , then prove that PQ || BC

If D is the mid-point of the side BC of a triangle ABC, prove that vec AB+vec AC=2vec AD .

If D is the mid point of side BC of a triangle ABC such that vec AB+vec AC=lambdavec AD, write the value of lambda