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Euclid's Elements, Book I, Pro...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to construct a square with a given base. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over the diagram...
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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...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states that the parts of a split square add up to the whole. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over t...
More: lessons, discussions, ratings, reviews,...

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,...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows that when a square is split into segments, they still add up to the whole. The guide then examines the structure of the proposition. To reset the applet, press "r" while y...
More: lessons, discussions, ratings, reviews,...

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...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (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...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows the way that the areas of a split square add to equal each other. The guide then examines the structure of the proposition. To reset the applet, press "r" while your curso...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows the way that the areas of a split square add to equal each other. The guide then examines the structure of the proposition. To reset the applet, press "r" while your curso...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows the sum of different squares on a split segment. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over the dia...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows the sum of different squares along a bisected segment. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over th...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (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...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Square (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to construct a square equal to a given rectilinear figure. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor i...
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Explore Angles of Hexagons

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Drag the vertices of an irregular or regular hexagon, and compare the changes this makes in their angle measures and sums of angle measures.
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Explore Exterior Angles of a P...

Other polygons (Geometry) 
Java Applet 
Tool 

[0]

Drag the points on this diagram of a pentagon, and examine what happens to the angle measures and sum of the exterior angles. Java Sketchpad activities, with points for students to observe.
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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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Exterior Angles of a Polygon ...

Polygons (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that define exterior angles of a polygon and demonstrate that the exterior angles always add to
a constant (360 or 720 depending on your point of vie...
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Eyeballing Game

Polygons (Geometry)+ 
Java Applet 
Tool 

[0]

The user is given 7 tasks. Each involves using estimation to achieve a geometric task. Two samples are: moving a ray so that it is an angle bisector, and moving a vertex of a quadrilateral so that it ...
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Geoboard

Polygons (Geometry) 
Java Applet 
Tool 

[14]

Investigate, describe, and reason about the results of subdividing, combining, and transforming shapes using models and representations. Develop, understand, and use formulas to find the perimeter an...
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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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Heptagon, definition and prope...

Polygons (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet illustrating the properties of a heptagon (7 sided polygon).
The applet shows a heptagon where the user can drag any vertex to reshape it.
User can see ...
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Hexagon, definition and proper...

Polygons (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet illustrating the properties of a hexagon (6 sided polygon).
The applet shows a hexagon where the user can drag any vertex to reshape it.
User can see th...
More: lessons, discussions, ratings, reviews,...

Identify These Polygons

Polygons (Geometry) 
Java Applet 
Tool 

[0]

This applet tests your knowledge of polygons.
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