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Technology 
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Finding the Center of a Circle...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to find the center of a circle
using only a compass and straightedge.
The method used involves constru...
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Geoboard  Circular

Angles (Geometry) 
Java Applet 
Tool 

[1]

Use circular geoboard to illustrate angles and degrees.
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Incircle of a Polygon  Math O...

Circles (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the incircle of a polygon
 The largest circle the will fit inside a polygon that touches every side. The applet shows a polygon wh...
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Incircle of a Triangle  Math ...

Circles (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet demonstrating the concept of the incircle of a triangle  the largest circle the will fit inside a triangle.
The applet shows a triangle where the user ...
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Inscribed Angle of a Circle  ...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the inscribed angle of a circlethe angle subtended at the periphery by two points on the circle.
The applet presents a...
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Inscribed Angles

Arcs (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive Java illustration of the theorem of the angles inscribed into a circle. Inscribed angles subtended by the same asrc are equalas stated in Proposition III.21 of Euclid's Elements. The ...
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Inscribed and Central Angles i...

Arcs (Geometry)+ 
Java Applet 
Tool 

[0]

A Java illstration of the theorem linking inscribed and central angles subtended by the same arcProposition III.20 from Euclid's Elements. The applet is accompanied by a discussion of the pro...
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Inscribing a Regular Polygon i...

Circles (Geometry) 
Java Applet 
Tool 

[0]

(Under development) Increase the number of sides of a regular polygon inscribed in a circle.
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Intercepted arc  Math Open Re...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of the intercepted arc 
"That part of a circle that lies between two lines that intersect it".
The applet shows a circl...
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Intersecting Chords Theorem  ...

Chords (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the "Intersecting Chords" Theorem.
(When two chords intersect each other inside a circle, the products of their segments are equal.)
...
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Intersecting Secants Theorem ...

Secants (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the "Intersecting Secants Theorem". The applet
shows a circle and two secant lines intersecting at a point outside the circle.
Th...
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Major / Minor Arcs  Math Open...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate major and minor arcs. The applet shows a circle with two points
on it that can be dragged. The minor and major arcs they define are...
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Math Images Tool: Hypotrochoid

Circles (Geometry) 
Java Applet 
Tool 

[0]

There are three subgroups within the Hypotrochoid family. The point P can be in three different general locations in relation to the rolling circle: inside, outside, or on the edge. The user of this a...
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Problem of 2 Circles #1

Circles (Geometry) 
Java Applet 
Tool 

[0]

An applet is provided to help you visualize the problem involving 2 circles and at inscribed triangle.
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Problem of 2 Circles #2

Circles (Geometry) 
Java Applet 
Tool 

[0]

An applet is provided to help you visualize the problem involving 2 circles and 2 corresponding chords.
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Problem of 2 Circles #3

Circles (Geometry) 
Java Applet 
Tool 

[0]

An applet is provided to help you visualize the problem involving 2 circles and 2 corresponding chords.
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Problem of 2 Circles #4

Circles (Geometry) 
Java Applet 
Tool 

[0]

An applet is provided to help you visualize the problem involving 2 circles and a triangle on those circles.
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Radius of a Polygon  Math Ope...

Radius (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that define and describe the radius of a regular polygon.
The applet has a polygon where the user can change the umber of sides and alter the radiu...
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Radius of a circle  Math Open...

Radius (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the radius of a circle.
The applet shows a circle with a radius line.
The radius endpoints are draggable and the figure changes ...
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Radius of an Arc  Math Open R...

Radius (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that describe the radius of an arc and how to derive it from the width and height of the
segment defined by that arc. A practical use is described fo...
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Secant to a Circle  Math Open...

Secants (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate a secant to a circle. (not trig).
The applet shows a circle and a secant line. The points where the secant cross the circle are bo...
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Sector of a circle  Math Open...

Circles (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate a sector  a pie shaped part of a circle.
The applet shows a sector against the background of the circle of which it is part.
The ...
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Segment of a Circle  Math Ope...

Diameter (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate a segment of a circle  a part of a circle cut off by a chord.
The applet shows a circle and a segment of that circle, the ends of ...
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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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