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Technology 
Type 
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Quadrilaterals (Getting Starte...

Quadrilaterals (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the basics of quadrilaterals.
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Quadrilaterals Dialogue

Quadrilaterals (Geometry) 
Java Applet 
Support Material 

[0]

Introduces students to quadrilaterals and defines the characteristics of the polygon.
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Area and Perimeter  PDA versi...

Quadrilaterals (Geometry) 
Flash 
Tool 

[0]

This activity is designed to support the understanding of perimeter and area, and to run on PDAs.
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Area of a Square  Math Open ...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the area of a square.
The applet shows a square with all vertices draggable. As you drag any one, the area id continuously calculat...
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Area of Polygons and Circles

Quadrilaterals (Geometry) 
JavaScript 
Tool 

[1]

The user reviews area and learns the different formulas for the area of special geometric figures. After viewing examples, users can interactively practice finding the area of shapes with given param...
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Area of a Kite  Math Open Ref...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that deals with the area of a kite, (a quadrilateral with two distinct pairs of equal adjacent sides).
The applet shows a kite and the user can reshap...
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Area of a Parallelogram

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[1]

Illustrates and defines the formula for the area of a parallelogram. From Illuminations' IGD: Interactive Geometry Dictionary.
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Area of a Rectangle

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Illustrates and defines the formula for the area of a rectangle. From Illuminations' IGD: Interactive Geometry Dictionary.
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Area of a Rectangle  Math Ope...

Quadrilaterals (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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Basic Areas  of a Rectangle a...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[1]

This applet has you manipulate a rectangle and triangle in order to discover the area formulas.
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Classification of Quadrilatera...

Quadrilaterals (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...

Quadrilaterals (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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Congruent Transformation

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet follows descriptions on how to transform any quadrilateral into a parallelogram, rectangle, or triangle based on transformations of the pieces of the quadrilateral.
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Constructing Right Triangles

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Provides two applets that demonstrate how to construct right triangles with different sets of given information
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Dividing a Quadrilateral

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet demonstrates how to divide a quadrilateral into two equal halves.
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Euclid's Elements, Book 3, Pro...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows that opposite angles of a quadrilateral within a circle sum to the measure of two right angles. The guide then examines the structure of the proposition. The To reset the ...
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Euclid's Elements, Book 3, Pro...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with proving equality among quadrilaterals constructed by intersecting lines within a circle. The guide then examines the structure of the proposition. The To reset the ap...
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Euclid's Elements, Book I, Def...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Gives Euclid's original definitions of a square, oblong, rhombus, rhomboid, and trapezia and then examines the definitions' validity and durability. To reset the applet, press "r" while your cursor i...
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Explore Interior Angles of Pol...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Drag the vertices of a quadrilateral or pentagon, and examine what happens to the angle measures and sum of the interior angles. Java Sketchpad activities, with guiding questions for students.
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Exploring Quadrilaterals

Quadrilaterals (Geometry) 
Sketchpad 
Tool 

[0]

Students explore various types of quadrilaterals, investigating their properties and figuring out how the various shapes relate to each other. The link to the tool itself is to a zip file that cont...
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Geoboard  Coordinate

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Rectangular geoboard with x and y coordinates.
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Identify These Quadrilaterals

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[2]

This applet asks you to determine the types of quadrilaterals illustrated.
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Math4Mobile: Quad2Go

Quadrilaterals (Geometry) 
Mobile Device 
Tool 

[0]

Quad2Go is an application for cellular mobile phones that offers ways of learning about quadrilaterals by generating examples, observing, and experimenting with examples as the basis for generalized c...
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Midpoint Quadrilateral Notice/...

Quadrilaterals (Geometry) 
TINspire 
Tool 

[0]

Students write what they notice and wonder about a midpoint quadrilateral, and then use TINspire™ technology to add auxiliary lines and justify their conjectures about the midpoint quadrilateral.
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Perimeter of a Quadrilateral

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet demonstrates the rule of the perimeter of a quadrilateral.
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