Determine if an angle is acute, right, or obtuse. A protractor is provided.

Students can practice classifying triangles based on angle measurements through a series of self-check exercises and timed learning games.

Find a quick, concise explanation of angles and types of angles. Several examples are given to help you understand how angles are formed and the different types of angles.

[Free Registration/Login Required] Students will identify right, acute and obtuse triangles using many interactive tools available in ACTIVstudio 3.0. Students will be engaged using a magnifier tool, the fill tool, and drag and drop and...

Use this website to practice angle definitions using a matching game format.

Use this website to practice angle definitions using a flash card format.

Use this website to practice angle definitions using a concentration game format.

Use this website to practice angle definitions using a word search format.

[Free Registration/Login Required] Practice identifying different types of angles in this flipchart. See examples of the different angles.

Practice identifying triangles by their angles as acute, right, or obtuse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

This lesson plan provides students with an opportunity to practice drawing and measuring triangles and angles. It also shows pictures and gives definitions of each type of angle and triangle.

Play Tic Tac Toe while practicing your skills of identifying an angle as being acute, obtuse, right, or straight in this online game.

Determine if an angle is acute, right, or obtuse. A protractor is provided. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Explore acute, obtuse, and angle measures in this interactive activity.

This activity uses Cabri Jr to classify triangles according to their angle measure. [Requires Adobe Reader.]

This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of triangles and angles.

[Free Registration/Login Required] This flipchart is a look at angles in geometry. Drawing, labeling, measuring, special angles: (right, straight, acute, obtuse) and congruence.

[Free Registration/Login Required] This flipchart uses the protractor tool to understand the classification and naming of angles: acute, obtuse and right.

[Free Registration/Login Required] Students learn the difference between obtuse, acute and reflex angles and then use the protractor to measure various angles.

[Free Registration/Login Required] This flipchart gives an introduction to angles, reading a protractor, naming and classifying angles. It also includes opportunities to practice these skills. The lesson is aligned with the 5th grade...

Math glossary and terms on angles for kids. Learn the definitions used in this mathematics subject such as acute, obtuse, and right angles on this site.

[Free Registration/Login Required] This lesson is a thorough review of all types of angles (e.g. obtuse, right, scalene, isosceles, equilateral, alternate) with wonderful diagrams to reinforce thinking skills.

Students can review basic geometric terms using these self-check, multiple choice questions. Three levels of questions are provided.

In this Cyberchase video segment, Harry tries to snowboard and learns how to measure and identify many common angles.