how can I use the Pythagorean Theorem two find the distance between two points?

Question

Suppose two points on a grid are not on the same horizontal or vertical line.Describe how you can use the Pythagorean Theorem to find the distance between the points without measuring

Answer 1

Subtract the x values and square that number.
Subtract the y values and square that number.
add them together and take the square root.

Answer 2

D = the square root of [(x2-x1) + (y2-y1)]