Crossword A

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Across
  1. 2. distance between the center of a circle and any point on the circle
  2. 5. A type of triangle where all sides are equal
  3. 6. Sum of all sides
  4. 8. ratio of the circumference to the diameter of a circle
  5. 11. The distance around a circle
Down
  1. 1. Type of angle greater than 90 degrees
  2. 3. Measurement of the size of a surface (e.g., square units)
  3. 4. A polygon with 4 sides
  4. 7. The longest side of a right triangle
  5. 9. solid with 6 square faces
  6. 10. polygon with eight sides