Ratio

Selection prerequisites: Two segments or three collinear points.

Collinear points are points that lie on the same straight line.

If two segments are selected, this command measures the ratio of the lengths of the segments. The length of the first selected segment is the numerator of the ratio, and the length of the second is the denominator.

If three collinear points A, B, and C are selected in order, this command measures the ratio of the distance from A to C divided by the distance from A to B. If points B and C are on the same side of A, the ratio is positive; if B and C are on opposite sides of A, the ratio is negative.

Another way to think of the ratio defined by three collinear points is to think of a number line with its origin at point A and its unit point at B. The position of point C on this number line determines the value of the measurement.