This resource has been contributed by Winpossible, and can also be accessed on their website by clicking here - Classifying Angles.

In this mini-lesson, you will learn about the definition of an angle, degree and angle measure. An angle is the set of points i.e. the union of two rays having common endpoints. 1° is equal to 1/360 of a complete rotation of a ray about its endpoints i.e.1° = 1/360. It also explains with the help of video, about the classification of angles i.e. acute angle, right angle, obtuse angle, straight angles and adjacent angles etc. Further it explains using some examples with solution that angles whose measures have a sum of 90° are complementary angles and if the sum is 180° then the angles are supplementary. In addition, you will learn with explanations that if two angles share a common vertex and whose sides form two lines are vertex angles. You will also become familiar with the basics of the linear pairs of angles.

In this mini-lesson, you will learn about the definition of an angle, degree and angle measure. An angle is the set of points i.e. the union of two rays having common endpoints. 1° is equal to 1/360 of a complete rotation of a ray about its endpoints i.e.1° = 1/360. It also explains with the help of video, about the classification of angles i.e. acute angle, right angle, obtuse angle, straight angles and adjacent angles etc. Further it explains using some examples with solution that angles whose measures have a sum of 90° are complementary angles and if the sum is 180° then the angles are supplementary. In addition, you will learn with explanations that if two angles share a common vertex and whose sides form two lines are vertex angles. You will also become familiar with the basics of the linear pairs of angles.

This FREE mini-lesson is a part of Winpossible's online course that covers all topics within Geometry. Click on the video below to go through it. If you like it, you can buy our online course in Geometry by clicking here.

- Mathematics > General
- Mathematics > Geometry
- Education > General

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Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.

use informal arguments to establish facts about the angle sum and exterior angle of triangles, the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.