Title | Description | Thumbnail Image | Curriculum Topics |
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## Circular Structures |
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## DescriptionIn this lesson students will use their basic understanding of circles to learn how circular structures are built. The example shown is that of the Roman Colosseum. Students will construct an oval shape from circular arcs to simulate the elliptical shape of the Roman Colosseum. |
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## Closed Captioned Video: Circumscribing a Circle-Triangle |
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## DescriptionIn this TI Nspire tutorial, the Geometry window is used to circumscribe a circle about a triangle. This video supports the TI-Nspire Clickpad and Touchpad. This Mini-Tutorial Video includes a worksheet. A Video Transcript is available for this tutorial. |
Geometric Constructions with Triangles | |

## Closed Captioned Video: Geometry Applications: Circles |
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## DescriptionIn this program we explore the properties of circles. We do this in the context of two real-world applications. In the first, we look at the design of the Roman Coliseum and explore how circular shapes could have been used to design this elliptical structure. |
Applications of Circles, Definition of a Circle | |

## Closed Captioned Video: Geometry Applications: Circles, Segment 1: The Basics of Circles. |
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## DescriptionWe visit Chaco Canyon in New Mexico to explore the circular kivas and in the process discover how circular buildings have been used to study the heavens. A Video Transcript is available for this tutorial. |
Applications of Circles, Definition of a Circle | |

## Closed Captioned Video: Geometry Applications: Circles, Segment 2: Circles and Arcs. |
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## DescriptionThe Roman Coliseum is a large elliptical structure. Yet, the Romans likely used circular arcs to build it. This segment explores the properties of circles and shows how arcs can be used to create elliptical shapes. A Video Transcript is available for this tutorial. |
Applications of Circles, Definition of a Circle | |

## Closed Captioned Video: Geometry Applications: Circles, Segment 3: Chords and Inscribed Angles |
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## DescriptionThe Roman Pantheon is a domed structure that shows a keen awareness of the position of the sun throughout the year. The source of light from the top of the dome allows for the exploration of chords, inscribed angles, central angles, and intercepted arcs. A Video Transcript is available for this tutorial. |
Applications of Circles, Definition of a Circle | |

## Definition--Circle Concepts--Arc Length |
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## Definition--Circle Concepts--Arc LengthThis is a collection of definitions related to circles and related topics. This includes general definitions for parts of a circle, constructions involving circles, and other topics. |
Definition of a Circle | |

## Definition--Circle Concepts--Area of a Circle |
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## Definition--Circle Concepts--Area of a CircleThis is a collection of definitions related to circles and related topics. This includes general definitions for parts of a circle, constructions involving circles, and other topics. |
Definition of a Circle | |

## Definition--Circle Concepts--Center of a Circle |
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## Definition--Circle Concepts--Center of a CircleThis is a collection of definitions related to circles and related topics. This includes general definitions for parts of a circle, constructions involving circles, and other topics. |
Definition of a Circle | |

## Definition--Circle Concepts--Chord |
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## Definition--Circle Concepts--Chord |
Definition of a Circle | |

## Definition--Circle Concepts--Circle |
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## Definition--Circle Concepts--Circle |
Definition of a Circle | |

## Definition--Circle Concepts--Circle Inscribed in a Square |
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## Definition--Circle Concepts--Circle Inscribed in a Square |
Definition of a Circle | |

## Definition--Circle Concepts--Circle Inscribed in a Triangle |
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## Definition--Circle Concepts--Circle Inscribed in a Triangle |
Definition of a Circle | |

## Definition--Circle Concepts--Circles on a Coordinate Plane |
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## Definition--Circle Concepts--Circles on a Coordinate Plane |
Definition of a Circle | |

## Definition--Circle Concepts--Circular Arc |
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## Definition--Circle Concepts--Circular Arc |
Definition of a Circle | |

## Definition--Circle Concepts--Circular Composite Figures |
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## Definition--Circle Concepts--Circular Composite Figures |
Definition of a Circle | |

## Definition--Circle Concepts--Circular Cross-Sections |
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## Definition--Circle Concepts--Circular Cross-Sections |
Definition of a Circle | |

## Definition--Circle Concepts--Circular Functions |
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## Definition--Circle Concepts--Circular Functions |
Definition of a Circle | |

## Definition--Circle Concepts--Circular Models |
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## Definition--Circle Concepts--Circular Models |
Definition of a Circle | |

## Definition--Circle Concepts--Circular Numerical Models |
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## Definition--Circle Concepts--Circular Numerical Models |
Definition of a Circle | |

## Definition--Circle Concepts--Circumcenter of Triangle |
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## Definition--Circle Concepts--Circumcenter of Triangle |
Definition of a Circle | |

## Definition--Circle Concepts--Circumference |
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## Definition--Circle Concepts--Circumference |
Definition of a Circle | |

## Definition--Circle Concepts--Circumscribed Angle |
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## Definition--Circle Concepts--Circumscribed Angle |
Definition of a Circle | |

## Definition--Circle Concepts--Concentric Circles |
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## Definition--Circle Concepts--Concentric Circles |
Definition of a Circle | |

## Definition--Circle Concepts--Diameter |
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## Definition--Circle Concepts--Diameter |
Definition of a Circle |