Geometry

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Across
  1. 7. the shortest sides in the triangle
  2. 8. all the sides are equal
  3. 10. the space shape's covered
  4. 11. the angle's degree is 180
  5. 13. no sides are equal
  6. 14. the angle's degree between 90-180
Down
  1. 1. the smallest angle
  2. 2. two sides are equal
  3. 3. the sum of all the sides
  4. 4. the angle's degree between 180-360
  5. 5. the longest side in the triangle
  6. 6. one of the triangle's angle is 90°
  7. 9. the angle's degree is 90°
  8. 12. the point which two lines meet