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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Printable compass / straighted...

Straightedge and compass (Geometry) 
Flash 
Activity 

[2]

A web page that contains a list of 35 printable worksheets for compass and straightedge constructions.
Each printable sheet has 2 or 3 problems and links back to the pages interactively explaining th...
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Construct a 45° angle with ...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[2]

An interactive applet and associated web page that show how to construct a 45° angle with a compass and straightedge.
The animation can be singlestepped or run as a continuous movie.
...
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Bisecting a Line using Compass...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that provide stepbystep instructions on how to bisect a line using only a compass and straightedge.
The animation can be run either continuously lik...
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Construct a circle Through 3 P...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that demonstrate how to construct the circle that passes through all three given points.
The applet starts with three given points and the user can si...
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Construct a perpendicular at e...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that provide stepbystep instructions on how to
construct a perpendicular at the endpoint of a ray using only a compass and straightedge.
...
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GeoCon HD

Construction and loci (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

Construction and loci (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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Simple Constructions

Construction and loci (Geometry) 
Cabri Jr. 
Activity 

[1]

In this activity students use the Cabri Jr. application to perform simple constructions.
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Turtle Geometry

Construction and loci (Geometry) 
Java Applet 
Tool 

[1]

Move and turn a turtle.
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Perpendicular Bisector of a Se...

Construction and loci (Geometry) 
Java Applet 
Tool 

[1]

Use this applet to find out how to construct the perpendicular bisector of a line segment. From Illuminations' IGD: Interactive Geometry Dictionary.
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Origami Construction

Paper folding (Geometry) 
JavaScript 
Tool 

[1]

Follow these stepbystep instructions to construct a mathematically correct regular pentagon by folding a sheet of paper.
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Construct a 90 deg angle with ...

Straightedge and compass (Geometry) 
Java Applet 
Activity 

[0]

An interactive applet and associated web page that show how to construct a 90° right angle with a compass and straightedge.
The animation can be singlestepped or run as a continuous movie.
<...
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Constructions of Equilateral a...

Straightedge and compass (Geometry) 
Sketchpad 
Activity 

[0]

Students will discuss the difference between drawing and constructing a triangle using The Geometer’s Sketchpad. They will further develop constructions for both isosceles and equilateral triangles. ...
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Paper Cup Mathematics

Straightedge and compass (Geometry) 
Sketchpad 
Lesson Plan 

[0]

Imagine a discarded paper cup rolling on its side of a flat surface. What geometric shape does the path of the cup form?
Students investigate this question and begin the activity by experimenting wit...
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Basic Constructions (Getting S...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the concepts and procedures for basic constructions.
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Constructing Parallel and Perp...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to construct parallel and perpendicular lines, using earlier lessons about the basics of compass and straightedge construction.
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Midpoint of a Line Segment (Ge...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This lesson explains how to construct the midpoint of a line segment and inscribe a circle in a given triangle.
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Desargues Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Desargues Theorem which can be stated, "If the lines joining corresponding vertices of two triangles are concurrent, then the intersections of corresponding si...
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La Hire's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate La Hire's Theorem which can be stated, "If P lies on the polar of Q, then Q lies on the polar of P."
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Pappus's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Pappus's Theorem which can be stated, "If alternate vertices of a hexagon are collinear, then the intersections of opposite sides are collinear."
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Brianchon's First Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Brianchon's First Theorem which can be stated, "If AB, CD, and EF are concurrent at X, and BC, DE, and FA are concurrent at Y, then AD, BE, and CF are concurre...
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Pascal's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Pascal's Theorem which can be stated, "If the vertices of a hexagon lie on a conic, then the intersections of opposite sides are collinear."
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Brianchon's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Brianchon's Theorem which can be stated, "If each side of a hexagon touches a conic, then its diagonals are concurrent."
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The 3 Tangents Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate The 3 Tangents Theorem which can be stated, "If the triangle ABC touches the conic at P, Q, and R as shown, then AP, BQ, and CR are concurrent."
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The 3 Tangents and 3 Chords Th...

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate The 3 Tangents and 3 Chords Theorem which can be stated, "Triangle ABC is inscribed in a conic. If the tangent at A meets the chord BC at P, the tangent at B m...
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