Math Final

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Across
  1. 2. the continuous line forming the boundary of a closed geometric figure.
  2. 4. a plane figure with four equal straight sides and four right angles.
  3. 5. the height of an object or point in relation to sea level or ground level
  4. 6. a flat surface that has no thickness and extends forever
  5. 8. a part of a line that has a fixed starting point
  6. 13. if the sum of two angles is 90 degrees the angles are
  7. 14. a ninety degree angle
  8. 15. an angle which measures less than 90 degrees
  9. 17. extends infinitely in both directions
  10. 19. a function that serves to undo another function
  11. 21. angles that share a common side and a common vertex
  12. 22. a four-sided figure
  13. 23. the exact middle point
Down
  1. 1. angle greater than 90 degrees
  2. 3. two lines that create a right angle
  3. 7. lines in the same plane that never intersect
  4. 9. an exact location in space
  5. 10. something that is formed when lines intersect
  6. 11. a plane figure with eight straight sides and eight angles.
  7. 12. a line that intersects one or more parallel lines
  8. 16. the median value of a range of value
  9. 18. the extent or measurement of a surface or piece of land.
  10. 20. angles that are opposite