Brian McLogan
What are complementary and supplementary angles
👉 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...
Math Fortress
Geometry: Introduction to Geometry (Level 4 of 7)
This video continues introducing the basic building blocks for the successful study of geometry. This video goes over 3 slightly more challenging examples covering the appropriate way to denote and name angles formed by points on a...
Curated Video
Complementary and Supplementary Angles Lesson and Practice
In this video, the teacher explains the difference between complementary and supplementary angles and provides examples of each. The students are then given practice problems to solve and the teacher shows how to use equations to find...
Math Fortress
Geometry: Beginning Proofs (Level 2 of 3)
In this video we will present and prove our first two theorems in geometry. Right angles theorem and Straight angles theorem.
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,...
msvgo
Angle Sum Property of a Triangle
It explains the angle sum property of a triangle, that is, the sum of the measures of all angles of a triangle is 180 degrees.
Math Fortress
Geometry: Division of Segments and Angles (Level 6 of 8)
In this video we will start going over examples that involve adjacent angles, angle bisectors and angle trisectors.
msvgo
Introduction to Lines and Angles
It explains linear pair axiom and theorem on intersecting lines. It also provides problems based on the axiom and theorem.
Curated Video
Using Supplementary Angles to Find Unknown Angle Measures
In this video, you will learn how to use supplementary angles to find unknown angle measures. The teacher explains the different types of angles and reviews a common mistake when solving equations.
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]
Sophia Learning
Sophia: Finding Unknown Angles From Supplementary Angles
This video lesson describes how to find the missing angle in a supplementary angle pair. [4:32]
Shmoop University
Shmoop: Angles
This video discusses angles in an original, cute manner, illustrating different types of angles with animated characters.