Use that same red color. The Pythagorean theorem 8th grade Find distance between two points on the coordinate plane using the Pythagorean Theorem An updated version of this instructional video is available. And now we can find the 3-d distance to a point given its coordinates.
Use the Pythagorean Theorem as you normally would to find the hypotenuse setting a as the length of your first side and b as the length of the second.
Take the coordinates of two points you want to find the distance between. Use Any Number of Dimensions. Some straightforward initial questions are followed by some that require a little more explanation or use of the converse of Pythagoras. We write the absolute value because distance is never negative.