Question

15. Are the two triangles similar?

Yes or no? I think yes.
How do you know? I said, "The corresponding angles are congruent."

16. Are the two triangles similar?
Yes or no?
How do you know?

17. Are the two triangles similar?
Yes or no?
How do you know?

18. Are the two triangles similar?
Yes or no? I said yes
How do you know? I said, "The corresponding angles are congruent."

Are my answers to 15 and 18 correct? what are the answers to the others? Thank you​

Answer 1

18 is correct. I cannot read 16. The sum of the interior angles must be 180.

16) The triangles are similar because the corresponding sides are proportional
`(16)/(8)` =
`(12)/(6)` =
`(10)/(5)`

17) The triangles are not similar because the corresponding sides are not proportional
`(20)/(5)`≠
`(18)/(4)` ≠
`(16)/(3)`

Explanation: