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This glossary contains definitions of all of the terms in the Measurement and Geometry Module.



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A

Area

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Area refers to the space measured in square units that any 2 dimensional shape or polygon occupies.
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Area of Circle

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Area = pi x r2
Example of a Circle

Area of Rectangle

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Area = Length x Width

Example of a Rectangle

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Area of Triangle

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Example of a Trianlge

C

Circle

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A circle is the set of all points in a plane that are a fixed distance from a given point in the plane.


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Circumference

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The circumference is the distance around a closed curve such as a circle.
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Circumference of Circle

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Circumference = pi x d

Example of circumference of a circle
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Congruent Polygons

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Two polygons are congruent if their corresponding sides and angles are congruent. Two sides are congruent if they have the same length and angles are congruent if they have the same measure.
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Coordinate Plane

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The coordinate plane consists of two number lines (called axes) that are perpendicular (at 90 degree angles) to one another. The horizontal axis is called the x-axis and the vertical line is called the y-axis.



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Cube

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A cube is a rectangular solid in which each of its 6 faces are squares
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