Answer:
C^2=AxN
M^2=AxN
M^2=17x4
M^2=68
M=8,2
Step-by-step explanation:
The answer is 12. I am 1,000,000% positive that it is the correct answer
Here is your answer

REASON:

: The opposite sides of a parallelogram are equal.
So, in above given figure

(measures of opposite sides)




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