Geometry is a branch of mathematics that deals with shapes, angles, lines, points, etc. It studies their different properties, their interdependence, and functions, among other things. It is an ancient science and dates back at least to the 3rd century BC. Geometry has wide-ranging and diverse applications in various other disciplines of knowledge. Engineering, construction, architecture, physics, nanotechnology, manufacturing, computer graphics, designing, etc., are some areas that borrow from geometry and practically apply its different concepts. Here, we would mention ten of the best online courses on Geometry that are all freely available. We hope you will find this list instructive.

## 1- Basic language and notation of geometry:

It is a sort of foundational course on geometry. The instructor will acquaint the viewer with some primary concepts about geometry and its fundamental nomenclature. This course is beneficial to a layperson who is seeking to gather some knowledge about the subject. The instructor uses a smartboard to explain the different concepts, formulae, etc., to the students in an easy-to-understand and follow language. Here is the link to it.

## 2- Angle basics:

This course will introduce you to the world of angles. As anyone would tell you, angles form a pivotal position in geometry. If you are able to comprehend the theory and basics of angles, you have literally grasped the gist of geometry. There are different angles, and each of them has a particular function to perform and has distinct properties. There is also a way to denote different angles. This course will teach all this stuff and more too in an accessible format using a smartboard. You can go to that course by clicking here.

## 3- Lines, segments, rays, intro:

It is another entry-level course, and this time it is about lines, segments, and rays. These objects and shapes sit at the core of geometry. In this course, the instructor acquaints the student with these primary geometry objects and explains their different properties using a smartboard. The course uses simple language as it is an introductory course. You can join it here.

## 4- Measuring angles in degrees:

This course will teach you the all-important skill of measuring an angle. We need to measure the angle to their exact and most accurate coordinates to determine their value. There are different usages for every angle, and we assign them different roles accordingly and make use of them. This course will enlighten you on this vital aspect of geometry, and you can join it here.

## 5- CA Geometry: Area, circumference, volume

With this course, you will learn the difference between area and volume. You will also get to know about circumference and its importance in geometry. All these concepts have varied applications in geometry and other sciences as well. So, enroll in this course and learn all about these essential concepts. You can start your learning by clicking here.

## 6- CA Geometry: Triangles and Parallelograms

This course will teach you about these two crucial shapes. The instructor uses the technique of MCQs to shed light on their various properties and functions. He discusses all the options threadbare before pointing out the correct one. He makes use of the smartboard to make all the calculations and estimations. This course should attract all the geometry buffs. Here is the link to it.

## 7- CA Geometry: Basic trigonometry

Trigonometry is an extension of geometry. It is the computational aspect of geometry. What you learn in geometry about angles, triangles, etc., you apply it in trigonometry. There are formulae here to solve different problems, and their application requires knowledge of geometry. The trigonometry concepts are extensively used in several modern sciences and disciplines of knowledge; machine learning is one of them. The course is up for grabs, and you can join it here

## 8- Visual Pythagorean theorem proof:

Pythagorean theorem is a very popular geometric theorem. It describes the relationship between the sides of a right-angled triangle. It was discovered by the Greek Mathematician Pythagoras some 2,000 or more years ago. The theorem is named after him. The conclusion of this theorem still holds and has got hundreds of proofs. It also has application and usage in the modern world and is not just an academic thing. Such is the power of this theorem that it hasn’t lost its relevance in centuries. This course also describes many such proofs, and the instructor explains one of them in detail here. You will like what he has to share with you about this theorem. Here is the link where you can get all the wisdom on it.

## 9- Introduction to vertical angles:

Vertical angles are angles that form when two lines intersect each other perpendicularly. They have a common vertex and are not adjacent but always congruent angles. If you want more information on them, then this course is definitely for you. Not only will you learn their properties but also their functions and application in real life. You can learn all about it by joining here.

## 10- Angles formed by parallel lines and transversals:

This topic will excite anyone who is studying geometry and wants to make it in there. As you may have found out by now, geometry is all about angles. This course explores yet another type of angles that come into being by parallel lines and transversals. The instructor discusses the different angles that get formed due to one or more transversals, interesting two parallel lines, their values, properties, interplay, and the implications of such a formation. You can get more on the subject by clicking here.

## Conclusion:

That concludes our list of ten of the best courses on the subject of geometry. It is difficult to pick just ten topics on an issue that is as vast as geometry. Still, we have tried to come up with a comprehensive list on the topic. We hope it will help anyone willing to study this subject or enhance their existing knowledge on the subject. We wish you all the best.

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