Math Fortress
Geometry: Measurement of Angles (Level 8 of 9)
In this video we will go over a problem that involves inequalities and a problem that has an algebraic expression as a solution.
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...
Scholastic
Study Jams! Classify Triangles
Jam on with this multi-faceted activity teaching triangle classification. Start with a learner-paced lesson describing the different qualities of triangles and follow with a fun karaoke session. Also provided are two types...
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...
Flipped Math
Unit 1 Review: Tools for Geometry
Pupils review the vocabulary, formulas, and postulates from the opening unit in Geometry. Individuals use these to solve a problem set that requires learners to apply algebraic skills along with providing reasons within a proof. Scholars...
Flipped Math
Measuring Angles
An informative presentation shows pupils how to name and measure angles. Scholars revisit the different types of angles and their definitions and use their knowledge of what an angle bisector is to solve algebraic problems. At the end,...
CK-12 Foundation
Complementary Angles: Lesson
Complement the angle definition. The resource, a video within a basic geometry playlist, introduces the definition of complementary angles. Using the definition, the presentation finds complements of given angles.
CK-12 Foundation
Classifying Angles: Lesson
It's time to put the angles in place. Using diagrams, the video presents the basic definitions of the four classifications of angles. The segment in an informative playlist on basic geometry also provides informal descriptions of the...
Math Antics
Angle Basics
Take a linear approach to acquaint the class with angles. The video introduces the idea of angles from the notion of intersecting lines. Using the idea of perpendicular lines, the resource defines right, acute, and obtuse angles...
Brightstorm
Radian Measure of Angles - Concept
An informative lesson begins with a concept video explaining how radians are figured. Then it offers videos of four progressively difficult guided practice problems.
Curated OER
What is a Triangle?
Triangles, triangles, triangles. What makes a polygon a triangle? How many types of triangles are there? How do you determine what kind of triangle it is? Watch this video as the teacher explains 'tri' meaning three, making a triangle -...
Corbett Maths
Types of Angle
Angle in on the different types of angles. By watching an informative video, scholars see how to classify angles. It covers acute, right, obtuse, straight, and reflex angles. Some example problems focus on classifying angles given their...
Corbett Maths
Estimating Angles
Sometimes, exact measurements aren't necessary. Scholars learn to estimate the measure of angles by watching a useful video. The method employed here is to use 90-, 180-, and 270-degree angles as benchmarks, adding or subtracting as...
Curated OER
Types of Angles
Acute, obtuse, right, and straight are all different types of angles. This clip provides a brief definition and example of each of the four types of angles. Tip: Have your class go on an angle hunt, the team that finds the most of each...
Curated OER
How Do You Classify Triangles?
Triangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn about...
Curated OER
What are Acute, Obtuse, Right, and Straight Angles?
Angles are identified by the measurement of their angles. Well, that would make sense. The instructor illustrates four different angles and their names by identifying their degrees. Zero to less than 90 degrees is an acute angle, while...
Curated OER
How Do You Find Missing Angles in a Transversal Diagram?
Parallel lines with a transversal and one given value, find the value of the other seven angles. There are many geometric terms about angles and lines to know the meaning of and understand their relationship to each other. Understanding...
Curated OER
What is a Transversal?
There are two parallel lines intersected by one straight line, what's that one line called? A transversal. There are a few more things to know about transversal lines and the angles they create. What are vertical angles? Are they...
Khan Academy
Khan Academy: Angles: Acute Obtuse and Right Angles
Demonstrates how to find all acute, obtuse, and right angles in a given diagram.
Sophia Learning
Sophia: Classifying Triangles
This video lesson describes and provides examples of right, acute, and obtuse triangles. Students can check their understanding with an assessment. [2:24]
Sophia Learning
Sophia: Classifying Triangles by Angle
This video lesson shows examples of classifying triangles by their angle measurements. Students can check their understanding with an assessment. [3:54]
Art of Problem Solving
Art of Problem Solving: Introduction to Angles
Video tutorial uses examples to provide an introduction to angles including right, acute, and obtuse angles. [8:22]
Art of Problem Solving
Art of Problem Solving: Angles in a Triangle Part 2
Video tutorial uses problems to reinforce understanding of angles in a triangle. (Part 2) [6:23]