Geometry Vocabulary Review

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Across
  1. 3. eight-sided polygon
  2. 5. a parallelogram with four right angles
  3. 8. distance around a polygon
  4. 9. an angle that measures exactly 180 degrees
  5. 12. a triangle with two sides equal
  6. 13. angle that measures exactly 90 degrees
  7. 14. angles formed from intersecting lines that are opposite each other
  8. 15. an angle that measures less than 90 degrees
  9. 17. an instrument used to measure angles
  10. 19. a three-sided polygon
  11. 20. lines that intersect to form right angles
Down
  1. 1. six-sided polygon
  2. 2. lines in the same plane that never intersect
  3. 4. an instrument used to draw circles
  4. 6. a triangle have all sides congruent
  5. 7. a rectangle with four equal sides
  6. 10. a location in space
  7. 11. five-sided polygon
  8. 16. an angle that measures more than 90 but less than 180 degrees
  9. 18. part of a line having one endpoint and one direction
  10. 19. a quadrilateral with one pair of parallel sides