These two parallelograms are similar
2 answers:
In similar figures sides are in proportion
The sides of the bigger parallelogram are x+8 and 20
The sides of smaller parallelogram are x and 12
The sides are in proportion
We can solve this for x
To solve for x we cross multiply
20x=12(x+8)
20x=12x+96
Subtracting 12x both sides
20x-12x=96
8x=96
Dividing both sides by 8
x=12
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