understanding elementary shapes/angles

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Across
  1. 5. two rays with o common end point.
  2. 6. angle which is equal to 360 degree
  3. 8. figure made of three lines
  4. 9. triangle whose all side are equal
  5. 10. whose all sides are ubnequal
  6. 11. angle which larger than straight angle.
Down
  1. 1. angle which is equal to 90 degree
  2. 2. angle which is equal to 180 degree
  3. 3. which is less than 90 degree
  4. 4. which is more than 90 degree
  5. 7. whose any two side are equal