Math Antics
Points, Lines and Planes
Geometry begins with a point. The video introduces the concepts of points, lines, and planes. Using diagrams, the presenter includes how to name the objects along with how to write the names. Previewing the concept of 3-D space ends the...
Flipped Math
Points, Lines, and Planes
Geometry is more than just vocabulary. Pupils learn the basic geometric definitions and how to identify and name points, lines, and planes. Though the first lesson is packed with related vocabulary, scholars experience four postulates...
Curated OER
What is an Angle?
An angle is formed when two rays share a common endpoint. Want to know more about angles? There are a lot of terms in this lesson. You might have to watch it two or even three times to make sure you understand all the terms. I recommend...
Khan Academy
Acute Right and Obtuse Angles, Angles and Intersecting Lines, Geometry
This resource highlights the basics of working with angles and could provide a sound introductory activity for students who are beginning to learn about angles. Eager mathematicians will be introduced to the terminology associated with...
Krista King Math
Naming Simple Geometric Figures
Mathematicians use notation for efficiency, so make your classes more efficient! The instructor explains the definition and notation for key elements of geometry such as points, lines, and planes. This is the 37th lesson is a series of...
Virtual Nerd
What is an Ellipse?
This video answers the question, What is an ellipse? It gives a definition of an ellipse, shows the ellipses relation of a plane to a cone, and the names of different parts of the ellipse.
Curated OER
How Do You Find a Missing Angle in a Triangle?
The interior angles of any and ALL triangles adds up to 180 degrees. So if given two of the angle degrees, is it possible to find the value of the third angle? Yes! Use the triangle sum theorem to solve for the missing angle. Watch this...
Khan Academy
Khan Academy: Introduction to Euclidean Geometry: Lines, Line Segments, and Rays
In this video the students explore the difference between lines, line segments, and rays.
Virtual Nerd
Virtual Nerd: What Is a Ray?
Rays are very useful as two rays can create an angle, multiple angles can create a polygon, and by adding another dimension you get three-dimensional solids. This tutorial introduces you to rays and shows you how to name them. [4:51]
Khan Academy
Khan Academy: Geometry: Language and Notation of Basic Geometry
Explains terms and notation of basic elements of geometry. [12:57]
Khan Academy
Khan Academy: Terms & Labels in Geometry
Learn about geometry terms like point, line, and ray. We will also learn how to label them.
Khan Academy
Khan Academy: Introduction to Euclidean Geometry
In this video students gain an understanding of basic ideas in geometry and how we represent them with symbols.
Virtual Nerd
Virtual Nerd: What Is an Angle?
Take a look at this tutorial to learn about how an angle is formed, how to name an angle, and how an angle is measured. [4:45]