Title  Description  Thumbnail Image 

Activity Guide: Building a Scale Model of Himeji Castle 
This handson 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. 

Closed Captioned Video: Geometry Applications: Angles and Planes 
In this program we explore the properties of angles and planes. We do this in the context of two realworld applications. In the first, we explore Japan's Himeji Castle and in the process learn about different types of angles and how they're used in a defensive fortification. In the second applicaiton we explore sedimentary rock layers as examples of parallel planes. We explore the Burgess Shale fossils. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link 

Closed Captioned Video: Geometry Applications: Angles and Planes, Segment 1: Introduction 
The observatory in Arecibo, Puerto Rico provides astronomers insights into the structure of our solar system. Geometrically, the solar system relies on the plane known as the ecliptic. In studying the Earth’s orbit it is important to know that the Earth’s axis of rotation is at an angle relative to the ecliptic. This segment introduces the key themes of the program. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link 

Closed Captioned Video: Geometry Applications: Angles and Planes, Segment 2: Angles 
Himeji castle in Japan is a marvel of architecture and a startling example of geometry and military science. The castle was used to protect samurai armies from invading forces, and the use of acute, obtuse, and right angles as part of the defense structure provide many opportunities for exploring the nature of geometric angles. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link 

Closed Captioned Video: Geometry Applications: Angles and Planes, Segment 3: Planes 
In the Canadian Rockies, the Burgess Shale fossils provide a window to prehistoric Earth. Fossil layers are folded into sedimentary rocks. And sedimentary rocks are examples of parallel planes. This segment uses the properties of planes to analyze fossils. A Video Transcript is available for this tutorial at this Link Note: The download is Media4Math's guide to closed captioned videos. Other Closed Captioned VideosTo see the complete collection of Closed Captioned Videos, click on this Link 

Collections in a Box: Parallel and Perpendicular Lines 
This cheat sheet gathers together the resources on the topic of parallel and perpendicular lines. See the descriptions and links below. Each link takes you to a collection of resources around that topic. The middle column indicates the number of resources available and the third column takes you to page on Media4Math where those resources can be found. Subscribers can download the PDF version of this cheat sheet. Click Preview to see the HTML version. 

DefinitionAngle ConceptsAcute Angle 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAdjacent Angles 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAlternate Exterior Angles 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAlternate Interior Angles 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAngle 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAngle Bisector 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAngle Measure 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsAngle Vertex 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsCentral Angle 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsCircumscribed Angle 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsComplementary Angle 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsCongruent Angles 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsCorresponding Angles 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 

DefinitionAngle ConceptsExterior Angle 
This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Note: The download is a PNG file. Related ResourcesTo see the complete collection of Math Definitions on this topic, click on this Link. 