تعریف و معنای "plane geometry"

What is "plane geometry"?

Plane geometry, often simply called geometry, focuses on the properties and relationships of two-dimensional shapes and figures that lie on a flat surface, such as points, lines, angles, polygons, and circles. It deals with concepts like perimeter, area, and the relationships between angles and sides in polygons and triangles. Plane geometry forms the basis for understanding and solving problems involving flat surfaces, such as those encountered in architecture, art, engineering, and everyday life.