Curated OER
Symmetry Fun
In this symmetry learning exercise, 7th graders identify and complete 12 different lines of symmetry in polygons. First, they color all of the polygons that have a line of symmetry. Then, students circle all of the regular polygons and...
Curated OER
Sum of Interior Angles
In this sum of interior angles worksheet, 10th graders solve 10 different problems that are related to determining the sum of various interior angles in figures. First, they determine the sum of the interior angles of a dodecagon. Then,...
Curated OER
Polygon Mobiles
Students explore a variety of shapes and angles and create mobiles with information about a selected polygon. Both common and "not-so common" polygons are examined.
Maths Challenge
Maths challenge.net: Dodecagon Edges
Use your problem solving skills and ability to visualize to solve this problem of edges of a dodecagon.
University of Georgia
University of Georgia: Inter Math: Dodecagon
Intermath offers a definition of a dodecagon with various drawings of them. The site contains links to the left that give a real world example, related terms, an understanding of the term, "Interactive Checkpoint", and challenging...
Wolfram Research
Wolfram Math World: Dodecagon
This MathWorld site discusses dodecagons, a 12 sided polygon, the site gives formulas, yet variables are not defined well, to find the meanings of these variables go to the regular polygon link. [Requires Java.]
Teaching Treasures Publications
Teaching Treasures: Year Seven Math:true or False
This interactive worksheet covers such topics as geometry, measurement, number sense, and math in the real world.
Math Open Reference
Math Open Reference: Dodecagon (12 Gon)
Learn about dodecagons with this handy reference guide. Provides a detailed definition and an interactive activity that enhances further explanation. Includes links to related topics.