Homeschool Math
Homeschool Math: Lines, Rays, and Angles
This fourth-grade geometry lesson teaches the definitions for a line, ray, angle, acute angle, right angle, and obtuse angle. We also study how the size of the angle is ONLY determined by how much it has "opened" as compared to the whole...
Better Lesson
Better Lesson: Finding Angles
The three types of angles, right, acute, and obtuse, exist in our everyday surroundings. Young scholars find these angles using classroom items.
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.
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.
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.
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.
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.
Alabama Learning Exchange
Alex: Angles in the Mix
In this lesson plan, students explore straight, acute, and obtuse angles in artwork. Then students will use digital cameras to take pictures of objects in their environment that demonstrate these types of angles. Students will use these...
Texas Instruments
Texas Instruments: Classifying Angles
Students will create a variety of angles using the Geoboard APP. The teacher will use Screen Capture to display the angles created by the students and will lead a discussion on whether the angles are acute, right, or obtuse.
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...
Khan Academy
Khan Academy: Angle Types
Determine if an angle is acute, right, or obtuse. A protractor is provided.
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.
OER Commons
Oer Commons: Four Types of Angles
In this lesson, students learn about four types of angles: adjacent, vertical, supplementary, and complementary. They explore the relationships between these types of angles by folding paper, measuring angles with a protractor, and...
CK-12 Foundation
Ck 12: Angle Classification
[Free Registration/Login Required] Students explore classifying angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
E-learning for Kids
E Learning for Kids: Math: Singing Angels: Angles
Play an interactive game to determine the different types of angles.
AAA Math
Aaa Math: Types of Triangles Based on Angles
Students can practice classifying triangles based on angle measurements through a series of self-check exercises and timed learning games.
ClassFlow
Class Flow: Angles in Geometry
[Free Registration/Login Required] This flipchart is a look at angles in geometry. Drawing, labeling, measuring, special angles: (right, straight, acute, obtuse) and congruence.
ClassFlow
Class Flow: Angle Measurement
[Free Registration/Login Required] This flipchart uses the protractor tool to understand the classification and naming of angles: acute, obtuse and right.
Other popular searches
- Right Obtuse Acute
- Obtuse Acute
- Acute Obtuse Right Triangles
- Obtuse Acute Angles
- Obtuse Acute Triangle
- Obtuse and Acute Angles
- Obtuse, Right, Acute Angles
- Angle Acute Right Obtuse
- Geometry Acute Obtuse Angles
- Obtuse, Acute Angles
- Right, Acute, Obtuse Angles
- Obtuse, Acute, Right Angles