Geometry

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Across
  1. 3. a figure formed by two rays
  2. 7. a polygon with 5 sides
  3. 9. a quadrilateral that has opposite sides that are parallel and all sides are same length
  4. 10. a tool used to measure angles
  5. 11. a closed plane figure made up of line segments
  6. 13. has 4 right angles (also a parallelogram)
  7. 16. a quadrilateral with only one pair of parallel sides
  8. 18. has 4 right angles and all sides are equal
  9. 19. consists of two end points and all points of the line between end points
Down
  1. 1. a series of points that extends in two opposite directions
  2. 2. a polygon with 6 sides
  3. 4. the unit of measurement for measuring angles
  4. 5. a polygon with 4 sides
  5. 6. a location in space
  6. 8. a polygon with 8 sides
  7. 9. one endpoint and all points of the line on one side of the end point
  8. 12. a polygon with 3 sides
  9. 14. a line segment; used to make up polygons
  10. 15. the point of intersection of two sides of an angle or figure
  11. 17. a flat surface