Suppose HIJK is a parallelogram. Find the value of x and y.

x = 90, y = 12

Step-by-step explanation:

The key to this problem is the fact that opposite sides of a parallelogram are congruent (their lengths are equal).

Set up and solve two equations, one for x and one for y.

x + 80 = 2x - 10

80 = x - 10

90 = x

3y - 4 = y + 20

2y - 4 = 20

2y = 24

y = 12

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step-by-step explanation:

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