OACD is a trapezium made from 3 equilateral triangles OA=a OB=b m is the midpoint of CD
A) write AB in terms of a and b


b) show that OC is parallel to BM

OACD is a trapezium made from 3 equilateral triangles OAa OBb m is the midpoint of CD A write AB in terms of a and b b show that OC is parallel to BM class=