Help i will give brainliest plz help

7. N. 2x-16

8. Y. 4x+20

9. A. 9x-28.8

10. T. 7x-4

11. S. 6x+54

12. N. 8x+6

13. O. 7x+9

14. N. 7x

15. T. 10x+50

16. W. 4x+15

17. I. 5x+26

18. U. 33/5x-12

19. C. 2.8x-7.56

20. O 10/3x+1/6

i dont know nkw

step-by-step explanation:

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∠1≅∠2 by the alternate exterior angles theorem.

step-by-step explanation:

given, a ∥ b and ∠1 ≅ ∠3 .we have to prove that e ∥ f

we know that ∠1≅∠3 and that a || b because they are given. we see that by the alternate exterior angles theorem. therefore, ∠2≅∠3 by the transitive property. so, we can conclude that e || f by the converse alternate exterior angles theorem.

we have to fill the missing statement.

transitivity property states that if a = b and b = c, then a = c.

now, given ∠1≅∠3 and by transitivity property ∠2≅∠3 .

hence, to apply transitivity property one angle must be common which is not in result after applying this property which is ∠1.

the only options in which ∠1 is present are ∠1 and ∠2, ∠1 and ∠4

∠1 and ∠4 is not possible ∵ after applying transitivity we didn't get ∠4.

hence, the missing statement is ∠1≅∠2.

so, ∠1≅∠2 by the alternate exterior angles theorem.