Figure cdef is a parallelogram.

what is the value of r?

2
3
4
5

The value of r is 5

A parallelogram is a quadrilateral with parallel opposite sides but the angle between adjacent side is not 90°. Two opposite angles  are equal and acute in nature and the other  two opposite angles are equal and obtuse in nature.  

Given CDEF is a parallelogram

We have to find out the value of r

According to the property of parallelogram

The opposite sides of parallelogram are equal and hence we can right

From equations (1) ,(2) and (4) we can say that

The value of r is 5

For more information please refer to the link below

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step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

12cm

the answer is d