This is the Teacher's Guide that accompanies Geometry Applications: Angles and Planes.

This hands-on activity is a companion to the video segment from the Geometry Applications: Angles and Planes video. In particular, it supports the segment on the architecture of Himeji Castle.

This set of tutorials provides 48 examples of angles and how to identify angles by their measurement. NOTE: The download is a PPT file.

In this Slide Show, learn about the geometry of castle construction.

In this tutorial, learn what the Angle Addition Postulate is and how to use it to solve problems.

In this Math Riddles Game, have your students review vocabulary around the topic of angles.

This set of tutorials provides 48 examples of angles and how to identify angles by their measurement.

July 2013. In this issue we look at the crash of an Asiana Airlines in San Francisco. We investigate the math behind why the crash may have happened.

This is the transcript for the video entitled, Desmos Geometry Exploration: Angles. In this video tutorial angles are defined.

This is the transcript for the video entitled, Desmos Geometry Exploration: Types of Angles I.

This is the transcript for the video entitled, Desmos Geometry Exploration: Types of Angles II.

This is the transcript for the video of same title. Video contents: In this program we explore the properties of angles and planes.

This is the transcript for the video of same title.

This is the transcript for the video of same title.

This is the transcript for the video of same title.

This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts.

This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts.

This is part of a collection of video tutorials on the topic of using the Desmos Geometry tools to explore geometric concepts.

In this program we explore the properties of angles and planes. We do this in the context of two real-world applications.

The observatory in Arecibo, Puerto Rico provides astronomers insights into the structure of our solar system.

Himeji castle in Japan is a marvel of architecture and a startling example of geometry and military science.

In the Canadian Rockies, the Burgess Shale fossils provide a window to prehistoric Earth. Fossil layers are folded into sedimentary rocks.