Answer:
The length of CI is 10 units.
Step-by-step 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://tex.z-dn.net/?f=%5B%5Cbecause%20AI%3DCI%5D)



The value of x is 12.

Therefore the length of CI is 10 units.
Answer:
x=4 and y=(-6)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
Angle 6, Angle 8, Angle 2, and Angle 4 are supplementary to Angle 7.
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Answer:

look from the tan A angle , the opposite is 28 and adjacent is 45