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23 Cards in this Set
- Front
- Back
acute angle
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An angle that is less than a right angle. An acute angle measures less than 90 degrees.
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axis
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A reference line in a coordinate system. The x and y axes are marked in this coordinate system.
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centimeter (cm)
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A metric unit of length equal to one hundredth of one meter. (100cm = 1m)
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foot
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A unit of length in the customary system of measurement. (1 foot = 12 inches)
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gallon
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A unit of capacity in the customary system of measurement. (1 gallon = 4 quarts)
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graph
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A pictorial representation of some mathematical relationship or set of data.
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hexagon
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A polygon with six sides.
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horizontal axis
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The number line from left to right in a rectangular coordinate system. Also called the x-axis.
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meter (m)
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The basic unit of length in the metric system. One meter is a little more than 39 inches.
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obtuse angle
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An angle whose measure is greater than 90 degrees but less than 180 degrees.
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octagon
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A polygon with eight sides.
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parallelogram
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A quadrilateral with opposite sides parallel and equal in length. Opposite angles are equal.
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polygon
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A closed straight sided two-dimensional figure.
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pound (lb)
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A unit of weight in the customary system of measurement. (1 pound = 16 ounces.
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right angle
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An angle that is one-fourth of a full rotation. A right angle measures 90 degrees.
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solid shape
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In geometry, a closed three-dimensional figure.
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square
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A rectangle with all four sides an equal length.
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symmetry
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When one side of a shape is a mirror image of the other side, the shape is said to have line symmetry.
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rotational symmetry
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When a shape can be turned through a fraction of a full rotation and stil look the same.
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tessellation
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A repeated plane shape used to cover a surface without overlapping or leaving any gaps.
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triangle
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A polygon with three sides.
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vertical axis
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The number line from top to bottom in a rectangular coordinate system. Also called the y-axis.
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yard (yd)
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A unit of length in the customary system of measurement. (1 yard = 3 feet or 36 inches)
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