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Introduction to Angles
You could say that angles are some of the building blocks of geometry, and you've probably already seen lots of examples of angles in your life already. In this lesson, we'll go over the exact definition of an angle, how to name an...
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Decomposing and Composing Angles
We've decomposed numbers before to make them easier to work with, like how we decompose the number 12 into 10 + 2. That same concept is really helpful when working with angles, too! Especially when there's an unknown angle, we can...
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Introduction to Geometry
When you hear the word "geometry", you might think of shapes. And you wouldn't be wrong! But before we can get to shapes, we need to talk about the parts that can make up shapes, like points, lines, rays, and line segments. In this...
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Attributes of Shapes
Attributes of Shapes identifies shapes by reviewing their characteristics.
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Advanced Shapes - Math & Geometry Song
Learn about advanced shapes like trapeziums and right trapezoids with this math and geometry song by KLT.
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Let's Talk about Triangles
“Let’s Talk about Triangles” describes the main types of triangles and explains what makes each type unique.
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Classifying Triangles
Classifying Triangles explores the six types of triangles by defining the triangle types and classifying triangles by side length and angle measurement.
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Proofs Using CPCTC
Congruent triangles are two triangles that share the same shape and size, but their positioning may be different. If you know that two triangles are congruent, you can prove every corresponding angle and every corresponding side is...
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Subtract Angles
The video “Subtract Angles” reviews types of angles and demonstrates how to find unknown angle measures by using a subtraction equation with a symbol for the unknown angle measure.
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Conformal Maps
Nobel Laureate Roger Penrose (Oxford) gives a brief introduction to conformal space and how it can be used to represent space-time infinities.
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Conformal Cyclic Cosmology
Nobel Laureate Roger Penrose, University of Oxford, summarizes the core aspects of his theory of Conformal Cyclic Cosmology (CCC).
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Constructing Segments and Angles
In this video, you will learn how to construct congruent line segments and congruent angles. To complete constructions in mathematics, you will need only two tools: a compass and a straightedge.
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Congruent Figures and Symmetry
A video entitled “Congruent Figures and Symmetry” which models how to determine if figures are congruent and where lines of symmetry can be drawn.
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The Math of Snowmaking - Behind the Scenes at a Ski Resort
In this fun and educational video, we go behind the scenes of a real ski resort to learn about the complex process of making snow. Did you know that there's tons of math involved in snowmaking? We'll discover how they use math for...
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Angular Position, Velocity, and Acceleration
This video will explain and illustrate how to describe and measure rotational motion.
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Law of Sines and Cosines
This video will discuss examples of application of sine and cosine laws.
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Measure of an Angle
This video will discuss examples of converting between radian and degree measure.
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Angle Relationships
“Angle Relationships” will explain how to express the relationship between two angles.
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Identify Angles
A video entitled "Identify Angles" which discusses the different types of angles and how they can fit together to form other angles.
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Trigonometry and the Unit Circle
This video will explain trigonometric functions and how to use them with the unit circle.
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Rhombus, Square, Rectangle
A video entitled “Rhombus, Square, Rectangle” discusses the attributes of several quadrilaterals, including squares, rhombuses, and rectangles.
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The Pythagorean Theorem and the Coordinate Plane
In this video, the teacher explains how to use the Pythagorean theorem in the coordinate plane to find the length of a segment. They walk through the steps of identifying the right triangle, finding the values of the legs, plugging them...