##### Lines, Angles, Shapes, and Solids
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#### Complete List of Terms and Definitions for Lines, Angles, Shapes, and Solids

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