A helpful scientific calculator that runs in your web browser window.
Holt Online Learning
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In this Early Edge video lesson, you'll learn more about Triangles: Perimeter and Area, so you can be successful when you take on high-school Math & Geometry.
The Princeton Review
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In this Early Edge video lesson, you'll learn more about Equilateral, Isoceles and Scalene Triangles, so you can be successful when you take on high-school Math & Geometry.
The Princeton Review
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In this Early Edge video lesson, you'll learn more about Triangles, so you can be successful when you take on high-school Math & Geometry.
The Princeton Review
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In this Early Edge video lesson, you'll learn more about Types of Angles, so you can be successful when you take on high-school Math & Geometry.
The Princeton Review
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This interactive page shows the positions of a triangle's median, altitude, angle bisector and perpendicular bisector with respect to the positions of the triangle's vertices.
Universtiy of Washington - Math Department
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Interactive site on the attributes of triangles
Math Warehouse
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This site discusses the defintion of the centroid and median and gives the formulas for the lengths of the medians.
VIAS Encyclopedia
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