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Topic (Course) 
Technology 
Type 
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Why AAA does not prove congrue...

Similarity (Geometry) 
Flash 
Activity 

[1]

An interactive applet and associated web page that shows that angleangleangle (AAA) is not enough
to prove congruence.
The applet shows two triangles, one of which can be dragged to resize it...
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Dimension and Scale Dialogue

Similarity (Geometry) 
Java Applet 
Support Material 

[1]

Discusses fractal dimension, how that dimension relates to scale, and the formula needed to calculate the fractal dimension of an object.
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Side Length and Area of Simila...

Similarity (Geometry) 
Java Applet 
Tool 

[1]

The user can manipulate the side lengths of one of two similar rectangles and the scale factor to learn about how the side lengths, perimeters, and areas of the two rectangles are related.
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Dimension for Irregular Fracta...

Similarity (Geometry) 
Java Applet 
Support Material 

[1]

Discusses the problem of determining the fractal dimension of irregular fractals and how the scale is indeterminite in these fractals.
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Similar Figures

Similarity (Geometry) 
Java Applet 
Tool 

[1]

This applet demonstrates how similar figures are created through transformations.
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Similar Triangles

Similarity (Geometry) 
Java Applet 
Tool 

[1]

This applet tests your knowledge of the properties of similar triangles.
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Midpoint  Similar Triangles

Similarity (Geometry) 
Java Applet 
Tool 

[1]

This applet demonstrates the relationship of the segment connecting two midpoints of a triangle and the opposite side.
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MidPoint Theorem

Similarity (Geometry) 
Java Applet 
Tool 

[1]

Students investigate what is so special about the midpoints of a triangle. They discover the midpoint theorem and can answer an exploration question.
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Paper Folding Activity

Similarity (Geometry) 
Java Applet 
Lesson Plan 

[0]

Students fold a sheet of paper (a manipulative) and also simulate folding using a JavaSketchpad activity to observe geometric relations. Students think about the angle measurements and the side measur...
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Math Forum Teacher Packet: TI ...

Similarity (Geometry) 
TINspire 
Lesson Plan 

[0]

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “I Notice, I Wonder” focal activity, and some thoughts on why this activity works ...
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Coordinates and Similar Figure...

Similarity (Geometry) 
Computer 
Support Material 

[0]

Provides definitions and illustrations on coordinates and similar figures.
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Coordinates and Similar Figure...

Similarity (Geometry) 
Computer 
Support Material 

[0]

Provides definitions and illustrations on coordinates and similar figures.
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SelfSimilarity Dialogue

Similarity (Geometry) 
Java Applet 
Support Material 

[0]

Discusses how fractals are selfsimilar objects.
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Height of the Pole

Similarity (Geometry) 
Java Applet 
Tool 

[0]

This applet asks you to find the height of a pole using the information about the two surrounding poles. Look at the similarity of the triangles formed in the picture.
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Euclid's Elements, Book 4, Pro...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to inscribe a triangle that is equiangular to a given triangle (similar triangle) within a given circle. The guide then examines the structure of the proposition. The T...
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Euclid's Elements, Book 4, Pro...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to circumscribe a triangle that is equiangular to a given triangle (similar triangle) about a given circle. The guide then examines the structure of the proposition. T...
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Side Length, Volume, and Surfa...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

The user can manipulate the scale factor that links two threedimensional rectangular prisms and learn about the relationships among edge lengths, surface areas, and volumes.
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Understanding Ratios of Areas ...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

Users are given an opportunity to explore an interesting quantitative relationship between the area of a polygon and the area of an inscribed figure formed by joining the midpoints of the adjacent sid...
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Similar Triangles  Math Open ...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of similar triangles.
Applets show that triangles are similar if the are the same shape and possibly rotated, or ref...
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Similar triangles  ratio of v...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate that in similar triangles, ten items are always in the same ratio to each other
(perimeter, three sides, three altitudes, three me...
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Triangle similarity test  AAA...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page showing how the AAA similarity test works.
Two similar triangles are shown that can be resized by dragging. The other triangle adjusts to remain...
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Triangle similarity test  SAS...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page showing how the SAS similarity test works.
Two similar triangles are shown that can be resized by dragging. The other triangle adjusts to remain...
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Triangle similarity test  SSS...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page showing how the SSS similarity test works.
Two similar triangles are shown that can be resized by dragging. The other triangle adjusts to remain...
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Similar triangles  ratio of a...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate that in similar triangles, the ratio of their areas
is the square of the ratio of the sides. As you drag one triangle to resize it...
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Similar polygons  Math Open ...

Similarity (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of similar polygons.
Applets show that polygons are similar if the are the same shape and possibly rotated, or refle...
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