www.reference.com/article/worksheet-b6b9e426bc578096

A worksheet is an instructional tool that allows a learner to put concepts and ideas into practice. A worksheet may be used to help a student practice a mathematical process, connect ideas, review key points from a reading and more.

www.reference.com/article/worksheets-riddles-83113492960ff2fd

Riddle worksheets are available in books and online. BogglesWorldESL.com has anagram riddle, homophone riddle, rhyming riddle, and many other type of riddle worksheets available for free. KidsLearningStation.com provides free riddle worksheets with word and picture clue...

www.reference.com/article/regular-shape-math-afd245417475851f

A regular shape, also known as a regular polygon, is a shape that has sides that are all equal. If there are sides of differing lengths, these shapes are known as irregular polygons.

www.reference.com/article/names-shapes-934d9f003e9f7bad

Some commonly-known shapes are squares, circles, triangles, stars and rectangles. There are many different kinds of polygons used in geometry and many shapes that combine or arrange multiple polygons to be used in designs.

www.reference.com/article/3-d-shapes-32d074b932f3987b

Three-dimensional shapes are solid shapes that exist in three dimensions, which include length, width and depth. The main difference between 3-D shapes and 1-D or 2-D shapes is that depth is incorporated along a third axis outside of the original 2-D plane.

www.reference.com/article/composite-shape-f3cd8a2c90b96db0

A composite shape, also called a composite figure, is a geometric shape constructed from two or more geometric figures. A few examples of shape combinations that can be made to form composite shapes include triangles and rectangles, triangles and squares, squares and re...

www.reference.com/article/compound-shape-math-5136f21aa3688032

In math, a compound shape consists of two or more simple shapes, such as triangles, squares, circles and rectangles. Another name for a compound shape is a composite shape. An example of this concept is a triangle placed on top of a square.