The Math League
The Math League: Figures and Polygons
This website has basic definitions for most polygons, regular and irregular.
Sophia Learning
Sophia: Rhombi Practice Problems: Lesson 4
This lesson will provide examples that use the characteristics of rhombi to solve for unknown variables, side lenths, and angle measures. It is 4 of 5 in the series titled "Rhombi Practice Problems."
Ducksters
Ducksters: Kids Math: Quadrilaterals
Explore four-sided polygons called quadrilaterals on this site.
ClassFlow
Class Flow: Segments and Polygons
[Free Registration/Login Required] This flipchart reviews segments, parallel and perpendicular lines and then introduces polygons including quadrilaterals. It has many real world examples of shapes and includes Activote assessment.
ClassFlow
Class Flow: Playing With Shapes
[Free Registration/Login Required] This flipchart is a small lesson for 2nd grade math-geometry. Once students have been introduced to the key vocabulary terms in geometry, the teacher can reinforce those shapes, terms, and some...
Calculator Soup
Calculator Soup: Parallelogram Calculator
Calculate certain variables of a parallelogram depending on the inputs provided. Calculations include side lengths, corner angles, diagonals, height, perimeter, and area of parallelograms.
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