Angles&Triangles

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Across
  1. 1. angle has a measure that is exactly 180 degree.
  2. 3. the angles that have a common arm.
  3. 5. a triangle whose lengths of two sides are equal.
  4. 8. a pair of two angles when their sum is 90 degrees.
  5. 9. angle has a measure that lies between 90 degree and 180 degree.
  6. 10. two rays or line segments that have same end point.
  7. 11. angle has a measure that is exactly 360 degree.
Down
  1. 1. a pair of two angles when their sum is 180 degrees.
  2. 2. a flat surface which extends infinitely in all directions.
  3. 4. angle has a measure which is exactly 90 degree.
  4. 6. a triangle whose lengths of all sides are equal.
  5. 7. a triangle whose lengths of all sides are different.
  6. 10. angle has a measure below 90 degree.