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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
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Angles and Parallel Lines

Perpendicular and parallel lines (Geometry) 
Java Applet 
Tool 

[1]

Three applets that demonstrate the concepts of vertical angles, corresponding angles, alternate angles, transversal lines, and how parallel lines effect these relations.
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Bisecting a Line using Compass...

Perpendicular (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that provide stepbystep instructions on how to bisect a line using only a compass and straightedge.
The animation can be run either continuously lik...
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Exterior Angles of a Transvers...

Transversals (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that demonstrate the
exterior angles that are formed where a transversal crosses two lines. The applet shows the
two possible pairs of exterior a...
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Construct a perpendicular at e...

Perpendicular (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that provide stepbystep instructions on how to
construct a perpendicular at the endpoint of a ray using only a compass and straightedge.
...
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GeoCon HD

Perpendicular and parallel lines (Geometry)+ 
iPad 
Tool 
$ 
[1]

GeoCon HD is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon HD various constructions can be created with the touch of a finger. Resolve constructio...
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GeoCon

Parallel (Geometry)+ 
iPhone 
Tool 
$ 
[1]

GeoCon is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon various constructions can be created with the touch of a finger. Resolve construction task...
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Properties of Parallel Lines

Parallel (Geometry)+ 
Sketchpad 
Activity 

[2]

Students discover relationships among the angles formed when parallel lines are intersected by a transversal. The link to the activity itself is to a zip file that contains a pdf file of the activi...
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Angles

Parallel (Geometry)+ 
Java Applet 
Lesson Plan 

[1]

The following lesson is designed to introduce students to acute, obtuse, and right angles. It is also designed to introduce students to vertical angles, adjacent angles, alternate interior angles and ...
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Angles Formed by Parallel Line...

Perpendicular and parallel lines (Geometry) 
Sketchpad 
Tool 

[1]

Students identify and measure corresponding angles, alternate interior angles, and alternate exterior angles, and determine which angles are congruent to each other. The link to the tool itself is ...
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Definition of Perpendicular Li...

Perpendicular (Geometry) 
Java Applet 
Tool 

[1]

Defines and illustrates perpendicular lines using an "interactive geometry dictionary" format.
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Perpendicular Bisector of a Se...

Perpendicular (Geometry) 
Java Applet 
Tool 

[1]

Use this applet to find out how to construct the perpendicular bisector of a line segment. From Illuminations' IGD: Interactive Geometry Dictionary.
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MidPoint Theorem

Parallel (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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Parallel Lines and Transversal...

Perpendicular and parallel lines (Geometry) 
PowerPoint 
Activity 

[0]

This PowerPoint show includes definitions, graphics, sound, and links to help introduce parallel lines and transversals. There is a student worksheet that accompanies the lesson to help the students s...
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Parallel Lines and Transversal...

Perpendicular and parallel lines (Geometry) 
PowerPoint 
Activity 

[0]

Student worksheet to accompany Parallel Lines and Transversals PowerPoint document (see resource connection below)
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Geometry Activities for Middle...

Perpendicular and parallel lines (Geometry) 
Sketchpad 
Activity 
$ 
[0]

These activities provide students with the opportunity to explore geometric concepts such as symmetry, transformations, and even fractal geometry in a way no other teaching tool can. The dynamic ca...
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Angles Formed by Parallel Line...

Perpendicular and parallel lines (Geometry) 
Sketchpad 
Activity 

[0]

Students identify and measure corresponding angles, alternate interior angles, and alternate exterior angles, and determine which angles are congruent to each other. The link to the activity itself...
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Perpendicular Slopes

Perpendicular (Geometry) 
TINspire 
Activity 

[0]

In this activity, students investigate the “negative reciprocal” relationship between the slopes of perpendicular lines. The final phase of the activity is appropriate for more advanced students as th...
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Interaction of Angles, Paralle...

Perpendicular and parallel lines (Geometry) 
Computer 
Lesson Plan 

[0]

This lesson provides directions for teaching the interaction of angles, parallel lines, and perpendicular lines using Geometer's Sketchpad.
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Line Segment, Ray, Parallel Li...

Perpendicular and parallel lines (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the concepts of ray, line segment, parallel and perpendicular lines and their important properties and usages in geometry.
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Parallel Lines and Transversal...

Parallel (Geometry)+ 
Flash 
Support Material 

[0]

This minilesson explains the definition, basics and uses of parallel lines and transversals in geometry.
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Identifying Special Angle Pair...

Perpendicular and parallel lines (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to identify special angle pairs, i.e. angles formed when a transversal cuts (or intersects) parallel lines.
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Relationships Among Special An...

Perpendicular and parallel lines (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains more about basic geometric figures and classifying angles according to their measures, and about more complex geometric relationships among them.
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Angle Bisectors and Perpendicu...

Perpendicular and parallel lines (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to use the laws of logarithms discussed earlier for simplifying logarithmic equations and apply these for solving word problems.
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Constructing Parallel and Perp...

Perpendicular and parallel lines (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to construct parallel and perpendicular lines, using earlier lessons about the basics of compass and straightedge construction.
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Angles and Parallel Lines (Ams...

Parallel (Geometry)+ 
Flash 
Support Material 

[0]

This minilesson explains parallel lines and interior, exterior, alternate interior and exterior, and corresponding angles.
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