Math New Year Puzzle

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Across
  1. 2. Angle A corner formed vertically between two straight lines
  2. 4. For 60/4=15, the name of math termonology for 4
  3. 6. Triangle Closed triangle formed by three 6cm edges
  4. 7. For 5-3=2, the name of math terminology for 5
  5. 9. For 5-3=2, the name of math terminology for 3
  6. 12. For 60/4=15, the name of math termonology for 15
  7. 14. Angle Two straight lines intersect to form a 240 degree angle
  8. 15. Triangle A closed triangle formed by a side of 3cm, a side of 4cm, and a side for 5cm
Down
  1. 1. For 10*3=30, the name of math terminology for 10
  2. 2. For 60/7=8......4, the name of math terminology for 4
  3. 3. Triangle A closed triangle formed by a two edge of 6cm and a side of 8cm
  4. 5. For 10*3=30, the name of math termonology for 3
  5. 8. Angle Two straight lines intersect to form a 120 degree angle
  6. 10. For 60/4=15, the name of math terminology for 60
  7. 11. Angle Two straight lines intersect to form a 180 degree angle
  8. 13. Angle Two straight lines intersect to form a 60 degree angle