I have number 10 done but can someone help me out with 11?

x=5

Step-by-step explanation:

opposite angles are the same, so the small ones are 15. 180-30=150

150/2=75 75/15=5

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

step-by-step explanation:

the true ones are a b and d