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Math Vocabulary 6

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  • An angle that measures greater than a right angle
    Obtuse
  • A quadrilateral with two pairs of parallel sides and four sides of equal length
    Rhombus
  • A polygon with four sides and four angles
    Quadrilateral
  • A shape that begins and ends at the same point
    Closed
  • A straight line segment in a polygon
    Side
  • A polygon with six sides and six angles
    Hexagon
  • Lines that cross each other at exactly one point
    Intersecting lines
  • A quadrilateral with two pairs of parallel sides, four sides of equal length, and four right angles
    Square
  • A polygon with five sides and five angles
    Pentagon
  • A shape that does not begin and end at the same point
    Open
  • A quadrilateral with two pairs of parallel sides, two pairs of sides of equal length, and four right angles
    Rectangle
  • A polygon with eight sides and eight angles
    Octagon
  • A part of a line that includes two points, called endpoints, and all the points between them
    Line segment
  • Lines in the same plane that never cross and are always the same distance apart
    Parallel lines
  • A closed plane shape with straight sides that are line segments
    Polygon
  • A shape on a flat surface that is formed by curves, line segments, or both
    Plane
  • An angle that forms a square corner
    Right
  • An angle that measures less that a right angle.
    acute
  • A shape formed by two line segments that share an endpoint
    Angle
  • A polygon with seven sides and seven angles
    Heptagon
  • the point of intersection of two sides of a polygon
    Vertex
  • Two lines that intersect to form four right angles
    Perpendicular lines
  • An angle whose measure is 180°, completely flat.
    Straight
  • The point at either end of a line segment
    Endpoint
  • An angle with a measure that is greater than 180° and less than 360°.
    Reflex
  • The unit used for measuring angles
    Degrees
  • A polygon with three sides and three angles
    Triangle
  • A quadrilateral whose opposite sides are parallel and of equal length
    Parallelogram
  • A quadrilateral with at least one pair of parallel sides
    Trapezoid
  • An exact location in space
    Point
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