11. Similar 1/2
12. Similar 2
13. no
14. no
15. No, they are not congruent because rectangles do not have equal sides, so the length of one triangle could be longer than the other and the width ozone can be shorter than the other.
16. Yes
It’s C because
3*2 - 2* -1 =8
6+2=8
8=8
I got D. When looking at the point where they intersect is -4, and 2 1/2. hope I helped the best I could
It's 61/21. That's the answer.
