Question

Find the missing side length

Answer 1

Answer: I think the answer would be 18 or A

Step-by-step explanation: I think because 12+5=17 but 18 is the closest to 17 how I got it is because 15-10=5. It's hard to explain but i think it's A

Answer 2

a (18)

Explanation:

rate of large polygon side to small polygon side is 15:10, or big polygon is 1.5 times greater than small polygon.

so, 12 * 1.5 = 18.