Curated Video
How Many Unique Triangles
In this math video we will determine how many unique triangles can be formed. We will be given three angle measures and asked how many unique triangles can be formed. We will review and understand that the three interior angles of any...
Curated Video
Acute, Obtuse, and Right Angles
Mr. Addit reviews the definition of “angle.” He then reviews right angle, acute angle, and obtuse angle and provides examples of each.
Curated Video
How Many Unique Triangles | 7.G.A.2
In this math video we will determine how many unique triangles can be formed from a proposed list of angle measures. We will begin by reviewing the Triangle Angle Theorem which states that the three interior angles of a triangle must...
Curated Video
Let's Talk about Triangles
“Let’s Talk about Triangles” describes the main types of triangles and explains what makes each type unique.
Curated Video
Classifying Triangles
Classifying Triangles explores the six types of triangles by defining the triangle types and classifying triangles by side length and angle measurement.
Curated Video
Using Triangles to Find Unknown Angle Measures
In this video, the teacher explains how to use the measures of interior angles in triangles to find unknown angle measures. The teacher reviews the concept that the interior angles of a triangle add up to 180 degrees and that consecutive...
Curated Video
Angles of Polygons: Understanding Interior and Exterior Angle Measures
In this video, the teacher explains the concepts of polygons, interior and exterior angle measures, and how to find missing angles using equations. The teacher also provides examples and patterns to help students understand these...
Curated Video
Determining Similar Triangles Using Angle Measures and the Triangle Sum Theorem
In this video, the teacher explains how to determine if two triangles are similar by comparing their corresponding angles. They also discuss the triangle sum theorem and demonstrate how to find missing angle measures.
Brian McLogan
Classifying angle measures from a figure
Learn all about angles. An angle is a figure formed by two rays sharing a common endpoint. An angle can be classified as acute, right, obtuse, straight or refrex. An acute angle is an angle which measures less than 90 degrees. A right...
Curated Video
Triangle Sum Theorem and Exterior Angle Theorem
In this video, the teacher explains the basics of triangles, including the interior and exterior angles. The lesson covers the triangle sum theorem, using ratios to find angle measures, and the exterior angle theorem. The teacher...
Curated Video
Finding Missing Angle Measurements in Circles using the Intersecting Chord Theorem
In this video, the teacher explains how to find missing angle measurements within a circle using the intersecting chord theorem. They discuss the central angle theorem, the exterior angle theorem, and the difference between arc measure...
Curated Video
Understanding Similar Triangles: Analyzing Ratios of Side Lengths
In this video, students learn how to efficiently find the ratios of side lengths for similar triangles, even when their sizes are different. They will understand the concept of similarity in triangles and how corresponding angles have an...
Curated Video
Triangle Inequality Theorem: Determining if Angles and Side Measures Form a Triangle
This video teaches students how to determine whether given angle measures or side measurements will form a triangle using the Triangle Inequality Theorem and the Converse of the Triangle Sum Theorem. The teacher walks through examples...
Tarver Academy
7-1 How to find Ratio and Proportion - GEOMETRY
In This Episode, Tyler Teaches Us About How to find Ratio and Proportion - Geometry
Curated Video
Using Complementary Angles to Find Unknown Angle Measures
In this video, the teacher explains how to use complementary angles to find unknown angle measures. They provide examples and explain the correct method of solving equations involving complementary angles.
Loyola University Chicago
Math Flix: Complementary and Supplementary Angle Definitions
This video provides an opportunity to learn about complementary and supplementary angles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept. [3:41]
Loyola University Chicago
Math Flix: Complementary/supplementary Angle Computation
This QuickTime movie provides an opportunity to learn about computing the total degrees for complementary and supplementary angles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying...