Puzzle games in mathematics

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Across
  1. 1. Angle Two straight lines intersect to form a 120 degree angle
  2. 4. An angle is the angle formed perpendicularly between two straight lines
  3. 5. These types of lines have so much in common, but sadly they'll never meet
  4. 6. Angle Two straight lines intersect to form a 180 degree angle
  5. 8. Triangle Closed triangle formed by three 6cm edges
Down
  1. 1. Which numbers are not divisible by 2? This is just for me
  2. 2. eight plus (five times two)equals
  3. 3. Numbers 1,2,3,4,5
  4. 7. Angle Two straight lines intersect to form a 60 degree angle