Answer:
CU = 12
Step-by-step explanation:
Clearly from the diagram of the triangle we can say that,
AD, BE and CF are the medians of the triangle ABC , since they are bisecting the sides of the triangle equally.
Also , U is the intersection point of the these mediands of the triangle whic is known as centroid of the triangle.
Now, from the property of the centroid , centroid divides the median in the ratio of 2 :1 from the point C .
Thus CU will be
times of CF (median) .
Given is Cf equals 18 ,
Thus , CU =
×18 = 12.
So, CU equals 12 .
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Explanation:</h2><h2>
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The diagram for this problem is shown below. Point E is the intersection of the two diagonals and we know that:

Every internal angle of any rectangle measures 90 degrees, so:

So:

So the measure of angle BEC can be found as follows:
We know that triangle ΔCEB is an isosceles triangle because the diagonals of any rectangle measure the same. So

The sum of internal angles of any triangle add up to 180 degrees, so:

What does the black say, the options