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There are some key words that you need to know for circles: radius, circumference, diameter, sector, segment, tangent, chord and arc. In this video you will discover what they all mean.

This video discusses the topic of circles.

This video explains the equation of a circle.

This YouTube video explains how to calculate an irregular area on a map.

This YouTube video explains how to calculate a regular area on a map.

This online tutorial guides you through what information a map shows, map legends and the different types of maps which are available.

This online interactive lesson discusses what reflections are and provides examples of reflections.

This online lesson explains what rotations are.

This video will look at rotation. Rotation involves turning a shape around a set point.

This online tutorial will provide you with some guidelines on how to interpret both topographic and geologic maps.