Euclid specifically stated the ideas related to geometry-

Explanation -

Euclid's "Elements" is a fundamental work in geometry that is organized around a set of axioms and postulates.

The postulates, also known as Euclid's five postulates, are the foundational assumptions from which Euclid derives the rest of his geometric propositions.

They include statements about points, lines, planes, and basic geometric concepts. Some of these postulates are:

1. A straight line can be drawn from any point to any other point.
2. A finite straight line can be extended indefinitely in a straight line.
3. A circle can be described with any center and radius.
4. All right angles are equal to one another.
5. If a straight line falling on two straight lines makes the interior angles on the same side less than two right angles, the two lines, if extended indefinitely, will meet on that side. (Also known as the parallel postulate.)

These postulates served as the basis for Euclidean geometry and were used as starting points for Euclid to establish theorems and propositions in his work "Elements."

While the first four postulates are relatively intuitive and straightforward, the fifth postulate (parallel postulate) was the subject of much exploration and scrutiny throughout the history of mathematics and geometry, eventually leading to the development of non-Euclidean geometries.

Hence Euclid specifically stated the ideas related to geometry postulate.