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...

Here's a perfect way to introduce perfect squares. Individuals color in the diagonals of squares and record observations about patterns. They connect their diagrams to exponents of two and perfect squares.

Develop young mathematicians' knowledge of two- and three-dimensional shapes with this geometry workbook. From learning about the classifications of different shapes and figures to calculating their area, perimeter, and volume, this...

How many right triangles can you find in a prism, cone, or pyramid? Using right triangles to find lengths in three-dimensional figures is the focus of the lesson. After working with the Pythagorean Theorem to find missing side...

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...

There isn't a more popular geometry formula than the Pythagorean Theorem! Learners understand the special side relationships in a right triangle. They use the Pythagorean Theorem to find missing sides and to solve problems. They begin...

Why is there more daylight in June than in December if you live above the equator? How does the angle of sunlight shift throughout the year? Answer these questions and more with an interactive article about the sun, its path through the...

This site gives a description of diagonals along with a visual representation. Be sure to follow the links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving diagonals...

This site gives a definition and examples of a diagonal matrix. The site also contains many links to other related Math World sites.

Learn about the diagonals of a rectangle with this helpful reference tool. Provides a detailed definition, examples, and interactive activities that enhance further explanation. Includes links to related topics.

A complete reference guide to diagonals of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.

This site includes a basic definition for what a diagonal of a polygon is along with a pictoral example.

Learn about the diagonals of a parallelogram with this helpful reference tool. Provides a detailed definition and an interactive activity that enhance further explanation. Includes links to related topics.

Learn about the diagonals of a rhombus with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.

A counterpart problem in measurement would be to find the length of the diagonal of a square whose side is one unit long; there is no subdivision of the unit length that will divide evenly into the length of the diagonal. It thus became...

Get the definition and properties of a polygon. Then explore such topics as: 1) types of polygon 2) area 3) Perimeter 4) angles associated with polygons and 5) names of polygons.

The lesson discusses parallelograms. The resource examines facts, diagonals, and sides of a parallelogram. Explanations and examples are included.

A complete reference guide to quadrilaterals including squares, rectangles, parallelograms, trapezoids, and rhombus. It provides definitions and interactive activities that enhance further explanation.

A complete reference guide to finding the area of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.

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.

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.

This site gives the definitions for various polygon-related material.

This online dictionary of art terms from Artlex is a valuable tool. Line is on the Li page. Just scroll down to Line and read a definition with links or look at a sample works of art by Rembrandt or Richard Long. There are quotes by...

Providing simple descriptions and animated pictures of step-aerobics moves, this website is useful for instructors and individuals wanting to teach and learn step aerobics. Learn steps like "across the top," "hop turn," "indecision," and...