Geometry focuses on shapes and their properties. The most important types of things in geometry are point, line, plane, and solid.

A **Point **has no dimensions, only position. A **Line** is one dimensional. A **Plane** is two dimensional. A **Solid** is three dimensional.

There are two main types of geometry: **Plane Geometry** and **Solid Geometry**

**WHAT IS PLANE GEOMETRY: **Plane geometry deals about objects that are flat such as triangles or lines that can be drawn on paper (not three dimensional objects). LINK:

https://www.mathopenref.com/planegeometry.html

Before beginning, we have to talk about what a plane is. A plane can be thought of as a flat sheet with no thickness and goes on in one or more directions (infinitely large). Geometry mainly focuses on two things: **objects and their properties** and **proofs**. A proof is a method that justifies the claims made about objects as true.

Now moving on to the important vocabulary, some of them are **polygon**, **point**, **midpoint**, **cube**, **sphere**, **cylinder**, etc… Here is a full link of all the important vocab:

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-97007.php (IT IS RECOMMENDED TO GO THROUGH ALL OF THE VOCAB IN ORDER TO LEARN AS MUCH GEOMETRY!)

**PROOFS**: Proofs can be boring but at the same time it can give one a sense of satisfaction as it requires a lot of thinking and effort to figure out many ways to come to the conclusion (justify the proof as true). **ALSO, DON’T MAKE ASSUMPTIONS UNLESS OTHERWISE STATED**! It is possible to use **theorems **to start the proof!

**This is a very good website about all the concepts that are covered in geometry**: https://www.onlinemathlearning.com/basic-geometry.html