We did this in grade 6! Didn't we?

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Across
  1. 2. Half of the diameter.
  2. 4. Four sided closed figure.
  3. 6. Half circle is also known as
  4. 10. The angle that measures 180°.
  5. 12. Line segment that joins two points on a circle
  6. 13. Triangle where all sides are equal.
  7. 14. The angle that measures greater than 180° and less than 360°.
  8. 15. The angle that is greater than 90° and less than 180°.
Down
  1. 1. Triangle where two sides are equal.
  2. 3. A three sides closed figure.
  3. 5. Triangle where all sides are unequal.
  4. 7. The angles that measure 90°.
  5. 8. The line that connects two points on circle passing through the center.
  6. 9. The angle that measures less than 90°.
  7. 11. A point whhere two or more lines or rays meet.