geometry

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Across
  1. 4. parallelogram; diamond shape
  2. 6. polygon that is not convex
  3. 10. line that passes through two lines in the same plane
  4. 11. "if" part in conditional statement
  5. 12. adjacent/hypotenuse
  6. 14. triangle with 3 unequal sides
  7. 15. statement is defined to be true whenever both parts have the same truth value
  8. 17. point were to edges meet
  9. 18. two angles that have a common vertex and a common side
  10. 20. evidence that something is correct
  11. 21. statement; formula
  12. 22. 10 sided polygon
  13. 23. set of points whose coordinates satisfy a given linear equation
  14. 24. 3 sided polygon
Down
  1. 1. total distance around a figure
  2. 2. closed plane figure with 3 or more sides
  3. 3. "then" part in conditional statement
  4. 5. average
  5. 7. lines forming a 90 degree angle
  6. 8. segment from the vertex of a triangle to the opposite side and it must be perpendicular to that segment
  7. 9. figure formed by two rays
  8. 13. 7 sided polygon
  9. 16. if-then statement
  10. 19. part of a line that is bounded by two distinct end points
  11. 25. line starts at a point, then goes off for infinity