Mathazine crossword

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Across
  1. 3. It is equal to 3.14
  2. 4. set of points equidistant from one point
  3. 5. The opposite of factoring
  4. 7. There are 360 of these in a circle
  5. 8. Math involving triangles
  6. 9. This is equal to adjacent over hypotenuse
Down
  1. 1. An ellipse has two of these
  2. 2. It can be represented by y=mx+b
  3. 4. In order to solve (X+3)(X+4), you need to do this
  4. 6. This is used to solve non-right triangles