Definition:That which produces Medial Whole with Rational Area/Terms

Definition

Let $a$ and $b$ be two positive real numbers.

Let $a - b$ be a straight line which produces with a rational area a medial whole.

The terms of $a - b$ are the elements $a$ and $b$.

Whole

The real number $a$ is called the whole of the straight line which produces with a rational area a medial whole.

Annex

The real number $b$ is called the annex of the straight line which produces with a rational area a medial whole.