Geometry

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Across
  1. 3. Angles with a common vertex and a common side
  2. 5. A pair of adjacent angles with non common sides that are opposite rays
  3. 6. Lines, segments or rays that form a right angle
  4. 7. An angle greater than 90 degrees
  5. 9. Two angles that equal 180 degrees
Down
  1. 1. Two angles that equal 90 degrees
  2. 2. An angle that measures 90 degrees
  3. 4. Two nonadjacent angles formed by intersecting lines
  4. 8. An angle less than 90 degrees