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ResourceSpotlight
In this introductory activity, students will explore vertical and adjacent angles. They will define and identify pairs of angles. Then they will change the intersecting lines of a geometric model to make conjectures about the relationships of the pairs of angles.
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Texas Instruments, Inc.
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ResourceSpotlight
Students will explore corresponding, alternate interior, and same-side interior angles. This is an introductory activity where students will need to know how to grab points in Cabri Jr.®
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Texas Instruments, Inc.
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ResourceSpotlight
In this introductory activity, students will explore vertical and adjacent angles. They will define and identify pairs of angles. Then they will change the intersecting lines of a geometric model to make conjectures about the relationships of the pairs of angles.
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Texas Instruments, Inc.
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ResourceSpotlight
Students will explore corresponding, alternate interior, and same-side interior angles. This is an introductory activity where students will need to know how to change between pages and grab points.
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Texas Instruments, Inc.
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ResourceSpotlight
In this activity, students will explore the Euler Line of a triangle. Students will discover that the centroid, circumcenter, and orthocenter are collinear. Students will also find that if the triangle is isosceles, then the centroid, circumcenter, incenter, and orthocenter are all collinear. Students will also look at ratios involved in the Euler line.
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Texas Instruments, Inc.
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Finding the midpoint of a line segment given the coordinates of the endpoints
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Math Open Reference
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A helpful scientific calculator that runs in your web browser window.
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Holt Online Learning
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The site gives a small applet exploring the relationship between circles centered at the origin, linear equations, and pythagorean triples.
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Pythagorean Triples
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Definition of 'Angle Bisector' and a general discussion of bisection. Link to 'line bisector'
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Math Open Reference
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