# Reflection: Line about a Circle

Little theorem without proof: The reflection of a line about a circle, is a circle. _________________ The Tangent Circle Problem: [list] [*]1. Tangent along the rim: solve for k [*]2a. Initial position: [url]http://www.geogebratube.org/material/show/id/58360[/url] [*]2b. Tangent to equal circles: [url]http://www.geogebratube.org/material/show/id/58455[/url] [*]3a. Four mutually tangent & exterior circles (Apollonius): [url]http://www.geogebratube.org/material/show/id/58189 [/url] [*]3b. Vector reduction: [url]http://www.geogebratube.org/material/show/id/58461[/url] [/list] [list] [*]Affine Transformation [url]http://www.geogebratube.org/material/show/id/58177[/url] [*][b]→Reflection: Line about a Circle[/b] [*]Reflection: Circle about a Circle [url]http://www.geogebratube.org/material/show/id/58185[/url] [*]Circle Inversion: The Metric Space [url]http://www.geogebratube.org/material/show/id/60132[/url] [/list] Iteration: [list] [*]Sequences 1: Formation [url]http://www.geogebratube.org/material/show/id/58896[/url] [*]Sequence 1: Formation [url]http://www.geogebratube.org/material/show/id/59816[/url] [*]Sequence 1: Iteration 1 [url]http://www.geogebratube.org/material/show/id/59828[/url] [*]Example of equivalent projections: [url]http://www.geogebratube.org/material/show/id/65754[/url] [*]Final Diagram: [url]http://www.geogebratube.org/material/show/id/65755[/url] [/list]

Resource Type
Activity
Tags
circle  exploration  geometry  inversion  lines  projection  reflection
Target Group (Age)
19+
Language
English (United States)

GeoGebra version
4.2
Views
9106

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