Geometry Vocabulary Terms

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Across
  1. 1. A closed figure with many sides
  2. 5. An angle that is less than 90 degrees
  3. 6. Two angles that add up to 180 degrees
  4. 9. Two lines that cross
  5. 11. A polygon with three sides that all have different lengths
  6. 13. Two angles that add up to 90 degrees
  7. 16. A triangle that has two equal sides
  8. 18. An angle that is exactly 90 degrees
  9. 19. Two lines that never touch
Down
  1. 2. An angle that is between 90 and 180 degrees
  2. 3. Two angles that sit right next to each other
  3. 4. This term goes on forever in both directions which is shown with arrows
  4. 7. Two rays that meet at a vertex
  5. 8. A polygon that has three sides all with the same length
  6. 10. An angle that is exactly 180 degrees
  7. 12. The middle point of an angle
  8. 13. A 3-D figure that has been sliced to create a 2-D figure
  9. 14. Two lines that meet at 90 degree angles
  10. 15. Two angles that sit across from each other and are equal
  11. 17. A polygon that adds up to 180 degrees