Everything you wanted to know about angles and more, including 1) how to measure angles 2) types of angles 3) angle relationships and 4) angles around a transversal.

On this site a viewer can learn about the different types of triangles, and categorized by either angles or sides. Tutorials are also included for interior and exterior angles of triangles. A teacher resource page includes a lesson plan...

Practice estimating the angle by sliding the blue "X" button up and down to open and close the angle. See how many aliens you can zap with the correct answer. Your total correct out of 10 is listed just below the problem.

Determine if angles in shapes and pictures are acute, right, or obtuse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] Classify acute, right, obtuse, and straight angles.

Review the following types of angles: acute, right, obtuse, and straight. Identify and draw types of angles in some practice problems.

This site gives the definition of acute triangles.

[Free Registration/Login Required] Using this flipchart, students will be able to identify various angles based on mathematical criteria. Questions are related to right, acute, and obtuse angles.

[Free Registration/Login Required] This flipchart reviews right, acute and obtuse angles with students. An Activote review is included at the end.

Definitions and properties of angles in geometry are explored. Topics discussed are right, acute, and complementary angles. Practice exercises with solutions are included.

The activity allows students to practice identifying different types of angles. An interactive activity and teacher resources are included.

[Free Registration/Login may be required to access all resource tools.] Practice counting the number of right angles in a diagram in this learning module. Includes video demonstration of a sample problem [2:11] and practice questions.

[Free Registration/Login may be required to access all resource tools.] Use reasoning to figure out the measures of missing angle measures

Watch and learn how to classify angles then test your knowledge.

What is an angle? Read about and see examples of the three different types while learning how to use a protractor. Links to an online game and an interactive quiz.

In this exercise, students practice identifying angle types. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this lesson, students will learn important definitions about angles relationships an use those facts to solve equations.

[Free Registration/Login may be required to access all resource tools.] Find the degree measure of an unknown angle in given triangles.

Complementary and Supplementary angles are explored in this tutorial video. [9:17] A PowerPoint presentation provides definitions of angle terms and a video offers examples for finding the missing angle in a supplementary or...

This activity from Shodor Education Foundation will help you learn or review your angle vocabulary.

Brush up on your math skills pertaining to types of angles then try some practice problems to test your understanding.

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

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.