Geometry

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Across
  1. 3. A cute angle less than 90 degrees
  2. 4. A line segment inside the circle
  3. 7. The distance around the circle
Down
  1. 1. A chord that passes through the center of the circle
  2. 2. A polygon with three line segments
  3. 5. An angle greater than 90 and less than 180 degrees
  4. 6. Space inside a closed figure