Question

figure cdef is a parallelogram. what is the value of r? 2 3 4 5 c 2r + 12 d 10r - 20 6r f e

Explanation:

Step1: Opposite sides of parallelogram are equal

DE = FC (opposite sides)

Step2: Set up equation with given sides

6r = 10r - 20

Step3: Solve for r

10r - 6r = 20 → 4r = 20 → r = 5

Answer:

5