Distance and Midpoints (VCE SSCE Mathematical Methods): Flashcards

Point exactly halfway between two endpoints

Average the $x$-coordinates and average the $y$-coordinates

$\left(\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2}\right)$

The $x$-coordinate remains constant

The $y$-coordinate remains constant

$\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Pythagoras' theorem

A point (ordered pair)

A number (length)

$x_2 - x_1$