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Curated Video
Classifying Two-Dimensional Figures by Examining Their Properties
In this video, we discuss the use of line segments and number of sides to classify figures, and emphasize the importance of angles in determining their specific names. Through examples and explanations, students learn how to classify...
Brian McLogan
What is an angle in standard form?
👉 Learn about angles in trigonometry. An angle is the figure formed by two rays sharing the same endpoint. The two rays are called the sides of the angle while the common endpoint of the two rays is called the vertex of the angle. Angle...
Brian McLogan
Identify the type of angle from a figure acute, right, obtuse, straight ex 1
👉 Learn how to define and classify different angles based on their characteristics and relationships are given a diagram. The different types of angles that we will discuss will be acute, obtuse, right, adjacent, vertical, supplementary,...
Curated Video
Geometry Town (Identify the two-dimensional shapes and polygons in real life.)
Andy and his class are going for a field trip to Geometry town. The teacher gave them an interesting task, they should look all around geometry town, and try to figure out the different geometrical shapes they’ve seen and learned at school.
Professor Dave Explains
Types of Angles and Angle Relationships
An overview of the types of angles and their relationships.
Curated Video
Sketching Angles Using a Protractor
This video explains how to sketch angles using a protractor. It provides step-by-step instructions on aligning the protractor, marking the desired angle, and connecting the rays to create the angle. The lesson emphasizes the importance...
Math Fortress
Geometry: Measurement of Angles (Level 4 of 9)
In this video we will start going over simple examples involving measurement of angles.
NUMBEROCK
Angles
Which type angle is the cutest? Which looks like the antlers on the head of a FULL-GROWN moose?! Find out the answers to these mysterious questions as Earl, our favorite pizza delivery man, takes us on his route for a day to show us...
Curated Video
Classify Quadrilaterals by Examining Their Sides
In this video, students will learn how to determine the relationship between quadrilaterals by examining their sides. The video explains the concepts of regular and irregular polygons, as well as the importance of considering the number...
Curated Video
Classifying and Drawing Angles by Using Their Properties
In this video, we explore how to classify and draw different types of angles. We start by understanding the properties of angles and how they relate to geometric figures. We review right angles, acute angles, and obtuse angles, comparing...
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...
Khan Academy
Khan Academy: Geometry: Measuring Angles in Degrees
Explains how to measure an angle in degrees using a protractor. Defines acute, right, and obtuse angles. Practice problems available. [8:22]
Khan Academy
Khan Academy: Geometry: Acute, Obtuse, and Right Angles
Demonstrates how to find all acute, obtuse, and right angles in a given diagram. [6:35]
Khan Academy
Khan Academy: Measuring Angles in Degrees
Explains what a protractor is and how it is used to measure the size of angles. Also discusses the different types of angles. [8:23]
CK-12 Foundation
Ck 12: Elem Math: Overview of Classification of Angles
[Free Registration/Login may be required to access all resource tools.] Video describing four types of angles - right, acute, obtuse and straight. [1:19]
Virtual Nerd
Virtual Nerd: How Do You Find the Sine of an Angle in a Right Triangle?
A trigonometric ratio is a ratio between two sides of a right triangle and includes the sine ratio. Discover how to find the sine of a particular angle in a right triangle by watching this video. [2:48]
Virtual Nerd
Virtual Nerd: How Do You Find the Cosine of an Angle in a Right Triangle?
A trigonometric ratio is a ratio between two sides of a right triangle. The cosine ratio is one of these ratios. Take a look at this tutorial to see how to find the cosine of a particular angle in a right triangle. [3:22]
Khan Academy
Khan Academy: Recognizing Angles
Demonstrates how to solve problems that ask you to identify types of angles. [2:15]