Answer:
I can get you jump started a bit.
Explanation:
So Each of those pairs of figures are Similar.
This means they have equal angle measures but different side lengths.
To find it, we have to make a Proportion:
Example: #11

So let's solve the first one!

Easy As Pie!
If you need more help, contact me! :)
Hope this Helps!
P.S. Stay Safe!