Basics of Geometry

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Across
  1. 2. Flat surface that extends endlessly in all
  2. 3. An _______ angle measures more
  3. 5. 90° and less than 180°
  4. 6. Part of a line having only one endpoint and extends infinitely in one direction
  5. 8. Two angles with measures whose sum is 180°
  6. 9. Two angles with measures whose sum is 90°
  7. 10. Consists of two rays that have a common
  8. 11. A _______ angle measures 90°
  9. 13. Has an exact location in space and no
  10. 14. Two lines in the same plane that do
  11. 16. Segment Part of a line having two
  12. 18. Two angles with equal measure formed by two intersecting lines
  13. 19. intersect
Down
  1. 1. called the vertex
  2. 4. A _______ angle measures 180°
  3. 7. Two lines that intersect to form right angles
  4. 12. Two lines that cross
  5. 15. A straight one-dimensional figure that does not have a thickness, and it extends endlessly in both directions
  6. 17. An ________ angle measures less than