Question

How do I solve A B C ?

Answer 1

(a) CA=CO+OA=a+a=2a

(b) AB=AO+OB=-a+b=b-a

(c) BC=BO+OC=-b-a

Explanation:

a) CA=CO+OA=a+a=2a

(b) AB=AO+OB=-a+b=b-a

(c) BC=BO+OC=-b-a

Answer 2

see explanation

Explanation:

The diagonals of a parallelogram bisect each other.

Thus CO = OA = a

(a)

CA = CO + OA = a + a = 2a

(b)

AB = AO + OB = - a + b = b - a

(c)

BC = BO + OC = - b - a