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What are the Basic Elements in Geometry?

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Tha Basic Elements of Geometry

The Basic Elements of Geometry help to compose shapes and other aspects of geometry by using these basic items.

Point - a point is represent by a dot that you can see and draw on a piece of paper. In reality a point is minuscule and is a single exact location

Line - a line is represented in geometry by a straight edge with arrows pointing in opposite directions signifying that the line continues on forever in those directions.

Line Segment - a straight edge that has two endpoints and stops at those endpoints or points.

Ray - a straight edge that has one endpoint and one arrow that signifies that the edge continues on forever in that single direction.


Basics of Geometry

Basic Geometry Elements

Basic Geometry Elements

point

point

line

line

line segment

line segment

ray

ray

How to Label the Elements

We label the element using symbols of Geometry

A point is ussually labeled with a single capital letter. When we see a single letter it is referring to specific point.

A lines is labeled with two points that define the line. When writing the notation we write the two point letter next to each other and draw a line symbol above them.

A line segment is labeled in the same way with the endpoints serving at the point of distinction.

One important item to note in a ray is that the labeling should always start with the point that is the endpoint of the ray.

Notice how each geometric element is written out in a problem or solution. This is important for more complicated geometry, so it is important to know from the beginning what the symbols mean and how to write them.


How do we use those elements?

We use the geometric elements everyday without always realizing it. Below I have drawn a triangle. Three line segments and three points (otherwise known as vertices) work together to create a triangle.

When two line segments, rays, or lines meet at a point it creates a vertex (plural vertices).


Geometry Elements work Together

How those elements can create a new geometric figure

How those elements can create a new geometric figure

Geomtery

Geometry can be broken down into simple pieces as long as we understand the basics. A Point, line, line segment, and ray are some of the basic elements in Geometry.

Comments

Makoto Kino on February 15, 2014:

Tnx For The Info.

samantha on June 05, 2012:

thanks

Jessee R from Gurgaon, India on April 10, 2012:

Excellent basic layout! When I learnt geometry.. this was the first class!

Basics are the most essential topics to learn in a topic. They help in clearing all concepts later on and developing a strong base over the topic

nice share!!

kthix10 (author) from IL on April 10, 2012:

Thanks! I have been teaching for 10 years and try to break things down into easy to understand parts that help my students explore math

WD Curry 111 from Space Coast on April 09, 2012:

Where were you when I was learning geometry? They made it too hard way back then!