## Euclidean Geometry

### Euclidean geometry is a branch of mathematics that deals with the study of geometrical properties and relationships in two-dimensional and three-dimensional spaces

Euclidean geometry is a branch of mathematics that deals with the study of geometrical properties and relationships in two-dimensional and three-dimensional spaces. It is named after the ancient Greek mathematician Euclid, who is considered the father of geometry.

In Euclidean geometry, various concepts and principles are explored, including points, lines, angles, planes, and shapes such as polygons and circles. These concepts are defined and explored using logical deductions and axioms or postulates.

Some fundamental elements and concepts in Euclidean geometry include:

1. Points: A point is a location in space that has no size or dimensions. It is usually represented by a dot.

2. Lines: A line is a straight, continuous path that extends infinitely in both directions. It is composed of an infinite number of points. Lines can be named by using any two points on the line or a lowercase letter.

3. Angles: An angle is formed by two rays that share a common endpoint called the vertex. The two rays are its sides. They can be measured in degrees or radians and classified as acute, right, obtuse, straight, or reflex, depending on their degrees.

4. Polygons: A polygon is a closed figure composed of straight line segments called sides. The sides do not cross each other. Common polygons include triangles, quadrilaterals, pentagons, hexagons, and so on.

5. Circles: A circle is a set of points equidistant from a single point called the center. It is defined by its radius (the distance from the center to any point on the circle) and its diameter (twice the radius). Circles have unique properties, such as circumference and area, which can be calculated using formulas.

Euclidean geometry follows a set of axioms or postulates, which are basic statements that are assumed to be true without proof. From these axioms, we can derive a set of theorems and proofs using logical deductions and reasoning. The results obtained in Euclidean geometry are considered valid within the Euclidean space.

Euclidean geometry has been studied and used for thousands of years and forms the basis of many practical applications, such as architecture, engineering, and design. It provides a framework for understanding and analyzing geometric shapes and their properties in a logical and systematic way.

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