Intermediate 2-20

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Across
  1. 2. A=bh
  2. 5. the sum of the angles is 90
  3. 8. pi d
  4. 10. A=s^2
Down
  1. 1. either add up areas or cut away areas
  2. 3. the ______ of a triangle add up to 180
  3. 4. A=pi r^2
  4. 6. add up all the sides
  5. 7. A=1/2 bh
  6. 9. A=(b1+b2)/2 h