Math Playground
Math Playground: Estimate the Angle
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.
ClassFlow
Class Flow: Introducing Angles
[Free Registration/Login Required] Students learn the difference between obtuse, acute and reflex angles and then use the protractor to measure various angles.
CK-12 Foundation
Ck 12: Geometry: Angle Classification Grade 6
[Free Registration/Login may be required to access all resource tools.] Classify acute, right, obtuse, and straight angles.
Khan Academy
Khan Academy: Recognize Angles
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.
Khan Academy
Khan Academy: Angle Types Review
Review the following types of angles: acute, right, obtuse, and straight. Identify and draw types of angles in some practice problems.
ClassFlow
Class Flow: Angles Votes
[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.
ClassFlow
Class Flow: Angle Tester
[Free Registration/Login Required] This flipchart reviews right, acute and obtuse angles with students. An Activote review is included at the end.
Analyze Math
Analyze Math: Angles in Geometry
Definitions and properties of angles in geometry are explored. Topics discussed are right, acute, and complementary angles. Practice exercises with solutions are included.
Shodor Education Foundation
Shodor Interactivate: Angles
The activity allows students to practice identifying different types of angles. An interactive activity and teacher resources are included.
CK-12 Foundation
Ck 12: Elem Math: Counting Right Angles in a Diagram
[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.
Scholastic
Scholastic: Study Jams! Math: Geometry: Classify Angles
Watch and learn how to classify angles then test your knowledge.
BBC
Bbc: Bitesize: Math: Angles
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.
Khan Academy
Khan Academy: Angle Types
In this exercise, students practice identifying angle types. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Shodor Education Foundation
Shodor Interactivate: Angles
This activity from Shodor Education Foundation will help you learn or review your angle vocabulary.
Sophia Learning
Sophia: Complementary and Supplementary Angles
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...
Quia
Ixl Learning: Types of Angles
Brush up on your math skills pertaining to types of angles then try some practice problems to test your understanding.
Khan Academy
Khan Academy: Angle Types
Determine if an angle is acute, right, or obtuse. A protractor is provided.
Doina Popovici
Math Play: Classifying Angles Game
Play Tic Tac Toe while practicing your skills of identifying an angle as being acute, obtuse, right, or straight in this online game.
Khan Academy
Khan Academy: Angle Types
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.
Alabama Learning Exchange
Alex: Angle Scavenger Hunt
In this lesson, students will explore straight, right, acute, and obtuse angles. Students will go on a scavenger hunt throughout the school to search for examples of these types of angles. The students will use digital cameras to record...
Math Open Reference
Math Open Reference: Obtuse Triangle
A reference guide to obtuse triangles. It provides a definition and interactive animated activity that enhances further explanation.
University of Georgia
University of Georgia: Inter Math: Exterior Angles
Intermath Dictionary's site defines terms relating to angles, gives examples, and offers interactive exercises.
Math.com
Math.com: Building Blocks: Classifying Angles
This geometry resource investigates types of angles. Definitions, detailed examples, and practice problems are included.
Math Open Reference
Math Open Reference: Angle Quiz
Students are assessed on different types of angles. Definitions of the angles are included.
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