Find the value of X, then find AB and DC. (opposite sides are congruent)
AB= 3x+8
DC= x+12

X=2, AB=14, DC=14

Step-by-step explanation:

3x+8=x+12

Subtract x from both sides

2x+8=12

Subtract 8 from both sides

2x=4

Divide by 2 on the sides

x=2

Then replace the x's with (2) and multiply

3(2)+8 and (2)+12

Both AB and DC are equal to 14.

Step-by-step explanation:

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