Answer:

Step-by-step explanation:

I dont know if those lines were suppose to be there, but i put 0.63 in simplest form = 63/100
If these four line segments are connected (kind of like a square) then only 4 endpoints are needed, but if they are all separate line segments, then you would need a maximum of 8 endpoints because any line segment has 2 endpoints and 4 line segments with 2 endpoints a piece equals 8 endpoints in total.
I hope this helped! :)
Answer:
(-10,-40)
Step-by-step explanation:
Here is a picture of the way I did it.