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.
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.
Handout
The Math League

The Math League: Obtuse Angle

For Students 9th - 10th
This tutorial on angles gives a basic definition of obtuse angles.
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...
Interactive
Quia

Quia: Geometric Terms Flash Cards

For Students 2nd - 8th Standards
Do you need practice remembering or learning different geometry vocabulary words and definitions? The flash cards at this web site are for you! There is a link to a list of terms with definitions you can click if you want to see if you...
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...
Activity
Math Is Fun

Math Is Fun: Obtuse Angles

For Students 3rd - 8th Standards
This very basic website gives a clear, simple explanation of what an obtuse angle is.
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.
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.
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.
Whiteboard
ClassFlow

Class Flow: Angles Votes

For Teachers 3rd - 8th Standards
[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.
Handout
Math Open Reference

Math Open Reference: Obtuse Angle

For Students 9th - 10th Standards
Learn about obtuse angles with this useful reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.