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20 Cards in this Set
- Front
- Back
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area
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The number of square units needed to cover the inside of a region or plane figure.
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parallelogram
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A quadrilateral with four sides in which each pair of opposite sides are parallel and equal in length.
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perimeter
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The distance around a shape or region.
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plane figure
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A 2-dimensional figue that lies entirely within one plane such as a triangle or square.
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polygon
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A closed plane figure formed using line segments that meet only at their endpoints.
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quadrilateral
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A shape that has four sides and four angles.
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volume
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The number of cubic units needed to fill a 3-dimensional figure or solid figure.
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hexagon
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A polygon with six sides and six angles.
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pentagon
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A polygon with five sides.
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octagon
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A polygon with eight sides.
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equilateral triangle
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A triangle with three sides of the same length.
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isosceles triangle
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A triangle with at least 2 sides of the same length.
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scalene triangle
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A triangle with no congruent sides.
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right triangle
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A triangle with one right angle.
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parallel lines
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Lines that are the same distance apart. Parallel lines do not meet.
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cube
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A 3-dimensional figure with six congruent square faces.
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cone
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A 3-dimensional figure with a curved surface and a circular base which comes to a point called the vertex.
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pyramid
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A solid figure with a polygon as a base and triangular shaped faces.
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cylinder
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A 3-dimensional figure having two circular bases and a curved surface connecting the two bases.
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sphere
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A 3-dimensional figure that has the shape of a round ball.
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