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4 results for “coordinate geometry”

Formulae (4)

(x - h)^2 + (y - k)^2 = r^2

The standard form of the equation of a circle with centre (h, k) and radius r.

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

Euclidean distance in the plane.

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

Midpoint of a line segment.

m = \frac{y_2 - y_1}{x_2 - x_1}

Steepness of a straight line.