Answer:
The length of CI is 10 units.
Explanation:
It is given that ABCD is a parallelogram and diagonals AC and BD intersect at point I.
The diagonals of a parallelogram bisect each other.


![[\because AI=CI]](https://img.qammunity.org/2020/formulas/mathematics/middle-school/grhve18y2alg4k3024el5rrhq8u065wo7m.png)



The value of x is 12.

Therefore the length of CI is 10 units.