Measuring Geometric Figures

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Across
  1. 5. middle of a circle
  2. 8. the distance around a circle
  3. 9. half of a circle
Down
  1. 1. measure of the space a 3-D shape occupies
  2. 2. the distance across a circle through its center
  3. 3. type of area found when adding all areas of faces
  4. 4. the distance from the center to any point on the circle
  5. 6. greek letter that equals 3.14
  6. 7. 2-D patterns of 3-D figures
  7. 8. figure made up of two or more shapes