Distance Formula (2 points): Formula that uses two points in the coordinate plane to find the distance in between them.

Midpoint: The point located in the middle of a line segment and that divides it in two congruent smaller line segments.

Midpoint (number line): The average of the coordinates.

Midpoint (coordinate plane): Located finding the average for the coordinates of y-axis (y coordinate for MP), and the average for the coordinates of x-axis (x coordinate for MP).