Distance Between Two Points (Leaving Cert Mathematics): Quizzes

The straight-line distance

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

Pythagorean theorem

$|x_2 - x_1|$

Take the square root

$\sqrt{34}$

34

Same distance from both points

$\sqrt{58}$

k = 2 or k = 4

9

Proving triangles are isosceles