hi mom

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Across
  1. 2. a straight line from the center to the of a circle or sphere.
  2. 3. the middle
  3. 4. the sixteenth letter of the Greek alphabet
  4. 5. a half of a circle or of its circumference.
  5. 6. all around
Down
  1. 1. to the other side thru the middle
  2. 3. round plane figure whose boundary