Geometry Terms

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Across
  1. 4. a reversed conditional; if a conditional is p->q
  2. 6. an eight-sided polygon
  3. 7. side by side and having the same distance continuously between them:
  4. 9. description of two lines that form a right angle
  5. 10. a tool used to measure angles
  6. 12. the amount of space taken up in a plane by a figure
  7. 14. a four-sided polygon
  8. 15. a five-sided polygon
  9. 16. a seven sided polygon
  10. 20. a six-sided polygon
  11. 21. the measure of the tilt of a line; rise over run
Down
  1. 1. the union of 2 rays that have the same endpoint; measured in degrees or radians (trig.);
  2. 2. a statement assumed to be true without proof
  3. 3. a ten-sided polygon
  4. 5. within the same plane
  5. 8. made by two points
  6. 9. a quadrilateral with both pairs of opposite sides parallel
  7. 11. in the same line
  8. 13. a drawing tool used to draw circles at different radii
  9. 17. a 2-D figure that can be folded on its segments or curved on its boundaries to form a 3-D figure; see article here
  10. 18. important mathematical statements which can be proven by postulates, definitions, and/or previously proved theorems
  11. 19. the amount of space a 3-D object can hold