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Unknown Type
Houghton Mifflin Harcourt

Holt, Rinehart and Winston: Homework Help Independent Practice: Points, Lines, Planes and Angles

For Students 5th - 8th Standards
Get independent practice identifying points, lines, rays, planes and angles. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
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Handout
Government of Alberta

Learn alberta.ca: Mathematics Glossary: Acute Angle

For Students 3rd - 8th Standards
Get a visual and animated definition of what an acute angle is, as well as examples of acute angles in the real world.
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Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Lesson: Angles

For Teachers 3rd - 8th Standards
This upper elementary and middle school lesson plan introduces the concept of acute, obtuse and right angles. Also, as the activity proceeds vertical, adjacent, alternate interior and alternate exterior angles are explored. Plenty of...
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Activity
Shodor Education Foundation

Shodor Interactivate: Angles

For Students 9th - 10th Standards
This activity from Shodor Education Foundation will help you learn or review your angle vocabulary.
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Website
Primary Resources

Primary Resources: Angles

For Teachers 3rd - 5th
A great place to find teacher resources on angles. Includes worksheets PowerPoint presentations and smartboard files.
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Unknown Type
Mr. Martini's Classroom

Mr. Martini's Classroom: Basic Geometry: Points, Lines, and Angles

For Students 3rd - 6th Standards
Students can review basic geometric terms using these self-check, multiple choice questions. Three levels of questions are provided.
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Unit Plan
CK-12 Foundation

Ck 12: Angle Classification

For Students 4th - 8th
[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...
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Interactive
Sophia Learning

Sophia: Complementary and Supplementary Angles

For Students 9th - 10th Standards
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...
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Unit Plan
Oswego City School District

Regents Exam Prep Center: Area of a Triangle and Parallelogram Using Trig

For Students 9th - 10th Standards
How can trigonometry be used to find the area of a triangle or parallelogram? Does the triangle need to be a right triangle, and how accurate can the results possibly be? The answers to these questions are found here along with several...
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Activity
Analyze Math

Analyze Math: Angles in Geometry

For Students 9th - 10th Standards
Definitions and properties of angles in geometry are explored. Topics discussed are right, acute, and complementary angles. Practice exercises with solutions are included.
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Unit Plan
University of California

University of California: Triangles and Simplices

For Students 9th - 10th Standards
This site from the University of California deals with different applications and topics pertaining to triangles, particularly triangulation.
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Lesson Plan
Alabama Learning Exchange

Alex: Angle Scavenger Hunt

For Teachers 3rd - 5th Standards
In this lesson plan, 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...
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Interactive
ABCya

Ab Cya: Bow and Angle

For Students 3rd - 6th
Join the heroes Loxley, Arrowyn, Busido, and Mockingbird in this epic adventure of Bows and Angles! Practice measuring and reading angles while you defend yourself from treacherous shadow ninjas.
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Handout
Math Open Reference

Math Open Reference: Acute Angle

For Students 9th - 10th Standards
Learn about acute angles with this helpful reference tool. Provides a detailed definition, images, and an interactive activity that enhances further explanation. Includes links to related topics.
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Handout
Quia

Ixl Learning: Types of Angles

For Students 3rd - 5th Standards
Brush up on your math skills pertaining to types of angles then try some practice problems to test your understanding.
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Unit Plan
E-learning for Kids

E Learning for Kids: Math: Pizza (Italian) Restaurant: Angles I

For Students 5th - 6th
In this interactive website, students practice various math skills such as identifying different types of angles, use the degree symbol, estimate and measure angles, and construct angles.
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Handout
The Math League

The Math League: Angles and Angle Terms: Acute Angles

For Students 9th - 10th Standards
This tutorial provides a basic definition and examples of acute angles.
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Interactive
Quia

Quia: Geometric Terms Matching

For Students 3rd - 8th Standards
Do you need practice remembering or learning different geometry vocabulary words and definitions? This matching game is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...
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Interactive
Quia

Quia: Geometric Terms Word Search

For Students 3rd - 8th
Do you need practice remembering or learning different geometry vocabulary words and definitions? This word search is the web site for you! There is a link to a list of terms with definitions you can click if you want to see if you are...
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Activity
National Council of Teachers of Mathematics

Nctm: Figure This: What's My Angle?

For Students 3rd - 8th Standards
Do people with big hands have larger angles between their fingers? See if you can find the answer this question when you try this math challenge on estimating and measuring angles. Discover how understanding angles and geometric shapes...
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Activity
Math Is Fun

Math Is Fun: Acute Angle

For Students 3rd - 8th Standards
This very basic website gives a clear, simple explanation of what an acute angle is.
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Activity
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Angle Basics

For Students 9th - 10th Standards
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.
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Whiteboard
ClassFlow

Class Flow: Angle Tester

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] This flipchart reviews right, acute and obtuse angles with students. An Activote review is included at the end.
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Whiteboard
ClassFlow

Class Flow: Angles

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] Practice identifying different types of angles in this flipchart. See examples of the different angles.