How much do you know?

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Across
  1. 3. The point where two lines meet.
  2. 7. The amount of space a shape takes up.
  3. 9. A number that is divisible by only 1 and itself.
  4. 10. The value of π
  5. 11. A number with no fractions or decimals.
  6. 13. A shape with three sides.
  7. 15. The distance around a shape.
  8. 16. A polygon with eight sides.
  9. 17. The middle value in a data set.
  10. 18. The order of operations acronym.
Down
  1. 1. The result of multiplying a number by itself.
  2. 2. A graph used to show data with bars.
  3. 4. A triangle with no equal sides.
  4. 5. A part of a whole.
  5. 6. The longest side of a right triangle.
  6. 8. The bottom number of a fraction.
  7. 12. The distance across a circle through the center.
  8. 14. The opposite of multiplication.
  9. 19. The answer to an addition problem.