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Willow Tree
Interior Angles, Exterior Angles, and Diagonals of Polygons
How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate...
West Contra Costa Unified School District
Sneaking Up on Slope
Pupils determine the pattern in collinear points in order to determine the next point in a sequence. Using the definition of slope, they practice using the slope formula, and finish the activity with three different ways to...
Wolfram Research
Wolfram Math World: Diagonal Matrix
This site gives a definition and examples of a diagonal matrix. The site also contains many links to other related Math World sites.
Geometry Help
Geometry Help: Squares
Explains the basic concept of a square with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
Math Open Reference
Math Open Reference: Area of a Kite
A complete reference guide to finding the area of a kite. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.