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Topic (Course) 
Technology 
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Area and perimeter of a rectan...

Rectangle (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page showing how to find the area and perimeter of a rectangle
from the coordinates of its vertices. The rectangle can be either parallel to the axes o...
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Definition and properties of a...

Rectangle (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page that show the definition and properties of a rectangle in coordinate geometry.
The applet has a rectangle with draggable vertices. As the user res...
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Diagonals of a rectangle Math...

Rectangle (Geometry) 
Flash 
Activity 

[0]

A web page and interactive applet show how to compute the length of the diagonals of a rectangle.
A rectangle is shown that can be resized by dragging its vertices. As you drag, the diagonals a...
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The bounding box (Coordinate ...

Rectangle (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page that show the definition and properties of the bounding box of a polygon or set of points. Also known as the circumscribed rectangle.
The bounding b...
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Quadrilaterals

Rectangle (Geometry) 
Sketchpad 
Activity 

[0]

Investigate the parallelogram, rectangle, square, rhombus, and isosceles trapezoid. Includes an activity in PDF format and a prepared sketch.
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Area of a Rectangle

Rectangle (Geometry) 
Flash 
Tool 

[0]

Flashbased introduction to finding the area of a rectangle, given length, width, and units of measurement. College Cram charges access fees by the month or by the semester for most resources. To ...
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Area of a Rectangle  Math Ope...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet showing the ways to calculate the area of a rectangle. The user can drag the vertices of the rectangle and the other points change automatically to ensure it rem...
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Classification of Quadrilatera...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

An interactive Java illustration that highlights specific properties of various quadrilaterals. Quadrilaterals may be convex, orthodiagonal, cyclic, inscriptible, having parallel or equal sides, equil...
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Classifying Quadrilaterals Vis...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

In this activity, you will visually explore the relationship between several different quadrilaterals and eventually classify them in the form of a 'family tree'. After an introduction to a square and...
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Construct a Rectangle

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

This applet tests your knowledge of the properties of a rectangle and has you construct one based on your knowledge.
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Euclid's Elements, Book II, De...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Provides Euclid's definitions for contained and gnomon and then inspects them. To reset the applet, press "r" while your cursor is over the diagram.
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Euclid's Elements, Book II, Pr...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states that the parts of a split rectangle add up to the whole. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is ove...
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Euclid's Elements, Book II, Pr...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states that when a rectangle is split into a square and a segment, they still add up to the whole. The guide then examines the structure of the proposition. To reset the applet,...
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Euclid's Elements, Book II, Pr...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states properties and constructions that come from splitting a rectangle. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cur...
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Euclid's Elements, Book II, Pr...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to construct new quadrilaterals by manipulating the rectangle and square. The guide then examines the structure of the proposition. To reset the applet, press "r" whil...
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Euclid's Elements, Book II, Pr...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to construct a given rectangle and square along a given segment. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cu...
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Golden Rectangle

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Illustrates iterations of the Golden Section
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Golden Rectangle  Math Open R...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that illustrate the properties the "Golden Rectangle" whose sides are in the "golden Ratio" of 1 : 1.618 : 1.
The applet shows a golden rectangle whos...
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Maximizing the Area of a Recta...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Students explore and discover the relationship between length of a side of a rectangle and the rectangle's area. They will try to determine what length maximizes the area.
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Perimeter of a rectangle  Ma...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet show how to compute the perimeter of a rectangle.
A rectangle is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously...
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Rectangle Properties

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

This applet examines the relationships between length, width, area, and perimeter of rectangles.
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Rectangle, definition and pro...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet showing the definition and properties of a rectangle.
The applet shows a rectangle where the user can drag any vertex. The other points then move in such...
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Tetragon, definition and prope...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet illustrating the properties of a tetragon (4 sided polygon, aka quadrilateral).
The applet shows a tetragon where the user can drag any vertex to reshape...
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What Is A Rectangle?

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

This applet illustrates what a rectangle is.
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Quadrilaterals

Rectangle (Geometry) 
JavaScript 
Tool 

[0]

The user reviews quadrilaterals and the special quadrilaterals commonly used in geometry. After viewing examples, users can interactively test their understanding of the different properties of quadr...
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