Well first you need to show the rest of the problems before i can truely help you sorry.
Answer:
should be a plane.
a plane is two dimensional and has intimate length and width. so it contains infinite lines.
The first option .
.................................
A(-3, -1); B(2, -1), C(2, 3)
You can read the length of AB and BC.
|AB| = 5
|BC| = 4
Use the Pythagorean theorem:

The perimeter:

Answer:
3x the second one
Step-by-step explanation: