Math!

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Across
  1. 5. the branch of math that deals with triangles
  2. 10. a _____ triangle has 3 60° interior angles
Down
  1. 1. an electronic device used for calculations
  2. 2. symbols used to count, measure, and label
  3. 3. the branch of math that deals with space, distance, shape, size, and relative position
  4. 4. a mathematical expression consisting of more than one algebraic terms
  5. 6. a force that has a direction and magnitude
  6. 7. the branch of math that deals with derivatives and integrals
  7. 8. a function that describes displacement
  8. 9. the circumference of any circle divided by its diameter