Geometry

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Across
  1. 5. less than 90 degrees
  2. 7. points in the same plane
  3. 9. angle angle with the measure of 90 degrees
  4. 11. have eight sides
  5. 14. 2 angles that measure 180 degrees
  6. 15. 2 angles next to each other
  7. 17. has six sides
  8. 18. angles across from each other on intersecting lines
  9. 20. the measurement of a surface
Down
  1. 1. has five sides
  2. 2. have twelve sides
  3. 3. measure of 180 degrees
  4. 4. ajacement/ supplementary angles that form a straight line
  5. 6. have three sides
  6. 8. measures greater than 90 degrees but less than 180
  7. 10. same sides as a quadrilateral
  8. 12. have four sides
  9. 13. have ten sides
  10. 16. 2 angles measured to 90 degrees
  11. 19. angles with the same measure