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What are the Basic Elements in Geometry?

Updated on December 3, 2012

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 | Source
point
point | Source
line
line | Source
line segment
line segment | Source
ray
ray | Source

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 | Source

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

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    • profile image

      Makoto Kino 

      4 years ago

      Tnx For The Info.

    • profile image

      samantha 

      6 years ago

      thanks

    • rahul0324 profile image

      Jessee R 

      6 years ago from Gurgaon, India

      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 profile imageAUTHOR

      kthix10 

      6 years ago from IL

      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 profile image

      WD Curry 111 

      6 years ago from Space Coast

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

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