| Terms |
Definitions |
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polygon
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a closed plane figure made up of line segments
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side
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each of the line segments of a polygon
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height
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the measurement of a segment from the base of a solid to the top
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plane
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an endless flat surface
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net
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a pattern used to make a solid
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rectangle
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a quadrilateral with 4 right angles
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right angle
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an angle that forms a right corner
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parallelogram
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a quadrilateral in which opposite sides a parallel
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line segment
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a part of a line that has two endpoints
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rhombus
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a quadrilateral in which opposite sides are parallel and all sides are the same length
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line
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a straight path of points that goes on and on in two directions
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intersecting lines
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lines that cross at some point
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face
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a flat surface of a solid that does not roll
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square pyramid
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a solid figure with a square base and four faces that are triangles
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straight angle
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an angle that forms a straight line
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perimeter
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the distance around a figure
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sphere
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a solid figure which include all points are the same distance from a point
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cone
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a solid figure with a base that is a circle and a curved surface that meets at a point
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vertex (plural is vertices)
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the point where two rays meet to form an angle; the points where the sides of a polygon meet; the points where three or more edges meet in a solid figure that does not roll; the point of a cone
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edge
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a line segment where two faces of a solid meet
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quadrilateral
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a polygon with four sides
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angle
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a figure formed by two rays that have the same endpoint
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cylinder
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a solild figure with two congruent circular bases
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trapezoid
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a quadrilateral with only one pair of parallel sides
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cube
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a solid figure with six congruent squares that as its faces
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triangular prism
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a solid figure with two parallel faces that are triangles and three faces that are rectangles
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ray
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a part of a line that has one endpoint and then continues endlessly in one direction
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length
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the measurement of a segment from one side of a solid to the other
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parallel lines
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lines that never intersect
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triangle
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a polygon with three sides
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solid
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a figurethat has length, width and height
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acute angle
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an angle that measures less than a right angle
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hexagon
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a polygon with six sides
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obtuse angle
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an angle that measures more than a right angle
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area
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the number of square units needed to cover a region
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square
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a quadrilateral with 4 right angles and all four sides are the same length
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rectangular prism
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a solid figure whose faces are all rectangles
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rectangular pyramid
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a solid figure with a rectangle for its base and triangles for all other faces
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perpendicular lines
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two intersecting lines that form right angles
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pentagon
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a plane figure with five sides
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point
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an exact location in space
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