math

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Across
  1. 3. are formed when two rays are joined
  2. 5. sum of all angles in a right angle
  3. 7. when a line is intersecting 2 parallel lines
  4. 8. it has no start or end
  5. 9. sum of 2 adjacent angles is 180
Down
  1. 1. sum of all angles in a straight line
  2. 2. when the angle is more than 90
  3. 4. when 2 lines intersect and from a 90 degree angle
  4. 6. the start of everything
  5. 10. something that has a start but no end
  6. 11. when the angle is 90