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Technology 
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The Right Triangle and the Tan...

Trigonometry (Geometry) 
Computer 
Support Material 

[0]

Provides an illustration and description of the tangent function's relation to the right triangle.
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Trigonometry and the Right Tri...

Trigonometry (Geometry) 
Computer 
Support Material 

[0]

Provides detailed information on the trigonometry of right triangles.
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Angles of Elevation and Depres...

Trigonometry (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains angles of elevation and depression, and how to use those to solve realworld problems.
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Applications of the Tangent Ra...

Trigonometry (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to find the tangent of an angle and how the tangent ratio is used to make indirect measurements when the measures of a leg and an acute angle of a right triangle are know...
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Distance Formula (Geometry)

Pythagorean theorem (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to use the Pythagorean Theorem to find the distance between two points in the plane.
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Inverse Sine and Cosine (Geome...

Trigonometry (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains inverse cosine and sine and how to use them to calculate angle measures.
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Inverse Tangent (Geometry)

Trigonometry (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the inverse tangent and core inverse functions: arcsine, arccosine and arctangent.
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Pythagorean Theorem (Getting S...

Pythagorean theorem (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the Pythagorean Theorem and how to apply the theorem and its corollaries to solve real life problems.
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Pythagorean Theorem Converse (...

Pythagorean theorem (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the converse of the Pythagorean Theorem and how to use it to prove a triangle is a right triangle.
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Right Triangle and Trigonometr...

Trigonometry (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the basics of trigonometric functions, right triangles, and their relationship.
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Solving Right Triangles (Geome...

Right Triangles (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains solving right triangles, and how to apply the concepts in solving realworld problems.
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The Pythagorean Theorem (Amsco...

Pythagorean theorem (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains right angle triangles and the Pythagorean theorem.
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The Tangent Ratio (Geometry)

Trigonometry (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the tangent ratio of a right triangle and how it can be used to determine unknown leg lengths given a known side length and an angle.
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Java Applet 
Support Material 

[1]

Read explanations of fortythree proofs of the Pythagorean theorem. Some of the proofs have additional pages with applets to explore.
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Touch Pythagoras

Right Triangles (Geometry)+ 
Android 
Tool 

[0]

With this app the Pythagorean Theorem is interactive. You can change the lengths of the legs (dragging), the length of the hypotenuse with two fingers and zoom (pinch zoom) and rotate the figure (dra...
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Geometria

Right Triangles (Geometry)+ 
Computer 
Tool 

[0]

Geometria is free (GPL) crossplatform software based on a tworole (teacher, student) model. The teacher creates a problem, provides it with an answer and saves the problem in a file. The student ope...
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The Pythagorean Theorem 1

Pythagorean theorem (Geometry) 
Computer 
Tool 

[0]

This tool illustrates the Pythagorean Theorem.
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Pythagoras' Theorem

Pythagorean theorem (Geometry) 
Flash 
Tool 

[1]

Test yourself on the Pythagorean Theorem and its applications in these ten questions.
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Flash 
Tool 

[0]

Flashbased introduction to finding the hypotenuse given the lengths of the legs of a right triangle. College Cram charges access fees by the month or by the semester for most resources. To get a ...
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Flash 
Tool 

[1]

Discover how the Pythagorean formula describes the relationships between the lengths of the legs and hypotenuse of a right triangle. Teachers and students can use this audionarrated lesson, interact...
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30  60  90 Triangles  Math ...

Right Triangles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the properties of a 306090 triangle.
The applet shows a right triangle that can be resized by dragging any vertex.
As it is drag...
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3:4:5 Triangles  Math Open Re...

Special right triangle (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the properties of a 3:4:5 triangle  one of the Pythagorean triples.
The applet shows a right triangle that can be resized by draggin...
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454590 Triangles  Math Open...

Special right triangle (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the properties of a 454590 isosceles right triangle.
The applet shows a right triangle that can be resized by dragging any vertex. ...
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Euclid's Elements, Book I, Pro...

Pythagorean theorem (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition lays out the Pythagorean Theorem  the sum of the squares of the sides of a right triangle equal the square of the hypotenuse. The guide then examines the structure of the proposi...
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Euclid's Elements, Book I, Pro...

Pythagorean theorem (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states that if the square of one side equals the sum of the squares of the other two side, then the angle between the two sides which sum is a right angle. The guide then examine...
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