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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

GeoCon HD

Tangents (Geometry) 
iPad 
Tool 
$ 
[1]

GeoCon HD is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon HD various constructions can be created with the touch of a finger. Resolve constructio...
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GeoCon

Tangents (Geometry) 
iPhone 
Tool 
$ 
[1]

GeoCon is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon various constructions can be created with the touch of a finger. Resolve construction task...
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A Japanese Temple Problem

Tangents (Geometry) 
Sketchpad 
Activity 

[0]

In this guided Geometer's Sketchpad exploration, students use their knowledge of tangent circles to discover a relationship between the radii of three circles which are mutually tangent to each other ...
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Kissing Circles

Tangents (Geometry) 
Sketchpad 
Activity 

[0]

This guided exploration, using Geometer's Sketchpad, examines the properties of tangent circles ("osculating" or kissing circles).
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Three Tangents to a Circle

Tangents (Geometry) 
Sketchpad 
Activity 

[0]

A guided exploration of a triangle formed by three tangents to a circle, and interrelations between its perimeter and the location of the tangents, using Geometer's Sketchpad.
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Circle Geometry Whiteboard Min...

Tangents (Geometry) 
Flash 
Tool 

[0]

Teach your geometry students advanced circle concepts with this set of interactive whiteboard minimovies. Animated flash cards bring the concepts to life while the interactive circle allows you to cr...
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Interactive Circle

Tangents (Geometry) 
Flash 
Tool 

[1]

Use the interactive circle to create the following circle parts:
Radius
Diameter
Tangent
Chord
Sector
Inscribed Angles
Central Angle
Segment
Ar...
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Construct Tangents from a Poin...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate how to construct the
two possible tangents to a circle from an external given point, using compass and straightedge.
It starts wi...
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Construct a tangent at a poin...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate how to construct a
tangent to a cicrle at a given point on the circle, using compass and straightedge.
It starts with the given c...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows that the line drawn at the tip of the diameter and perpendicular to it will fall outside the circle (and be tangent to the circle). The guide then examines the structure of...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows that a tangent is perpendicular to the diameter of the circle at that point of intersection. The guide then examines the structure of the proposition. The To reset the app...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states that when a line is drawn perpendicular to a circle's tangent, then that line passes through the circle's center (and is a diameter). The guide then examines the structure...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with angles formed within a circle and the relationship to the tangents. The guide then examines the structure of the proposition. The To reset the applet, press "r" while...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to cut an arc equal to a given length and with a given angle (to a tangent of the circle). The guide then examines the structure of the proposition. The To reset the a...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with proving equality among quadrilaterals constructed using diameters and tangents with respect to the given circle. The guide then examines the structure of the propositio...
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Euclid's Elements, Book 3, Pro...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with quadrilaterals constructed using lines that cut and fall tangent to the given circle. The guide then examines the structure of the proposition. The To reset the apple...
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Euclid's Elements, Book III, D...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

Provides Euclid's definition of circle and line intersection (touch) and inspects it. To reset the applet, press "r" while your cursor is over the diagram.
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Tangent Line  Math Open Refer...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate a tangent to a circle. (not trig).
The applet shows a circle and a tangent line. The center point and the tangent contact point ar...
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Tangent to an Ellipse  Math O...

Tangents (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the tangent to an ellipse.
An ellipse is shown and a tangent line that touches it at the one point.
The user can drag the tang...
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Examining Angles in Circles

Tangents (Geometry) 
Sketchpad 
Tool 

[0]

Investigate central angles, inscribed angles, angles formed by a tangent and chord, angles formed by intersecting chords, angels formed by two secants, angles formed by a tangent and a secant, and ang...
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Examining Segments in Circles

Tangents (Geometry) 
Sketchpad 
Tool 

[0]

Investigate the segment relationships in circles relating to chords, secants and tangents.
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Funhouse Mirrors

Tangents (Geometry) 
Sketchpad 
Tool 

[0]

A Geometer's Sketchpad tool for constructing distorted images that can be viewed undistorted with a cylindrical mirror. The file contains tabbed pages with several images, a grid for students to draw...
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