Mathematics

Problem

In parallelogram

ABCD

, the diagonals

AC

and

BD

intersect at

O

. Point

E

is the midpoint of side

AB

. If

AD = 6\text{ cm}

, what is the length of

OE

? a)

6\text{ cm}

4\text{ cm}

3\text{ cm}

2\text{ cm}