Geometry

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Across
  1. 2. when two geometric objects intersect at a right angle
  2. 4. a type of angle that is more than 90 degrees but less than 180 degrees
  3. 6. a certain point in the middle of a line
  4. 7. two angles whose measures add up to 180°
  5. 8. an angle that is exactly 180 degrees
  6. 11. formed when two lines meet each other at a point
Down
  1. 1. formed when two lines intersect each other at a single point
  2. 3. two angles whose sum is 90°
  3. 5. an angle that shares a common vertex or side
  4. 9. an angle that is excactly 90 degrees
  5. 10. an angle that is less than 90 degrees