Finish the Math Term!

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Across
  1. 5. How likely something is to happen.
  2. 6. A shape with 180 degrees.
  3. 8. Tool used for computing.
  4. 9. The outside of a shape.
  5. 11. The outside of a circle.
  6. 12. The study of shapes.
Down
  1. 1. Two angles that added together equal 180 degrees.
  2. 2. When two or more things are the same.
  3. 3. Two angles that added together equal 90 degrees.
  4. 4. A shape with 360 degrees and no angles.
  5. 7. Math using symbols to represent quantities.
  6. 10. A way to compare to objects.