In Mathematics, Euclidean Geometry (also known as “Geometry”)    is the study of various flat shapes based on different theorems and axioms. In schools, we have learned different concepts of Euclidean geometry such as points, lines, angles, planes, flat figures, solid figures and so on. The applications of Euclidean geometry plays a vital role in many scientific areas such as Astronomy, Crystallography and technical areas like Architecture, Engineering, Navigation, Aerodynamics and so on. Now, let us look at the applications of Euclid’s Geometry in detail.

## Architecture

The application of geometry is found extensively in architecture. Nowadays, Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) is based on Euclidean Geometry. The most important fundamental concept in architecture is the use of triangles. Architects generally use the triangle shape to construct the building. The congruence of triangles helps them to calculate the forces applied to the building. The triangle congruences are used to check whether the given forces are appropriately balanced so that the building will not collapse.

## Astronomy

Astronomy means the science of matter and objects beyond the Earth’s atmosphere such as space, celestial bodies and so on. Astronomers use Maths all the time. Initially, they use Maths to count the objects and entities in the sky during the daytime or at night. Later, they use Geometry in astronomy to calculate the direction, speed, velocity, momentum, the relativity of many celestial bodies.