Straight Line

Circle Ellipse Hyperbola Parabola

Analytic Geometry of Circles

Define, create and explore circles and their equations.
Dynamic change of circles by changing the parameter values of their equations.
Learn the properties and characteristics of circles and their geometrical representation. The following screenshots were designed to meet the pedagogical approach needed for teaching and learning of these topics:

Topic 1 - A circle centered at the origin            

Topic 2 - Any circle

Topic 3 - A tangent to a circle from a point

Dynamic movable tools, such as: Points, Segments, Straight Lines, Parallels, Perpendiculars, Tangents, Chords, Perpendiculars from a point, Tangents through an external point, Angles and Angle Bisectors.
Tracing while obtaining updated quantitative information for each location, and the dynamic tools, including the relevant equations.

Quantitative coordinate system (scales), fully user controlled by zooming in/out, dragging the axes and changing the scales.

Copy and Print: All the content can be easily transferred to a Word® document or to any presentation program such as Power Point® or to be printed directly.

A Help supplement to the software includes specified instructions for each of the software's components.

 

 

 

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Topic 1: A circle centered at the origin

A circle centered at the origin - screenshot

 

 

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Topic 2: Any circle

Any circle - screenshot Previous
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Topic 3: A tangent to a circle from any point

A tangent to a circle from any point - screenshot Previous
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Dalin Inc. Head Office: 49 Harav Kook St., Herzliya, 46342 Israel;  Phone:(972-9)-9562371, Fax:(972-9)-9514361  
USA Office: 350 W 55th St. #3i, New York, NY 10019;  Fax: (212)-582-5899
e-mail: dalin@mathematix.com

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Copyright © 2003 Dr. J. Dalin / Dalin Inc.