Answer:
Solve the 1st equation for y and then you substitute the answer of the y value to the other equation to get the x value
I didn’t see an image or anything but I looked it up and it said regular polygons, since they have the sides all the same length they must always be in the same proportions, and their interior angles are always the same.
1, Might not be precise
2, Can be hard to plot the graphs
3, If there are many solutions that will be really hard to plot sometimes.
This is just from the top of my head.
Term: 3 4 5
Value 20 .. 5
20 20r 20r^2
So 20r^2 = 5
r^2 = 1/4
r = 1/2
2 x 5 x 11 Is it I think. What do you think?