Geometry Crossword

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Across
  1. 6. ( two coplanar angles with a common vertex and a common side between them)
  2. 7. (set of points that has infinite length and width but no height)
  3. 8. ( set of all points)
  4. 9. (one obtuse angle)
  5. 10. ( has a vertex and a circular base)
  6. 11. (one right angle)
  7. 12. (all acute angles)
Down
  1. 1. ( angles that have the same measurements)
  2. 2. ( ray that divides an angle into two congruent adjacent angles)
  3. 3. (an educated guess based on known information)
  4. 4. ( number of cubic units contained in a solid)
  5. 5. (congruent polygons lying in parallel planes)
  6. 7. ( a logical argument in which each statement you make is supported by a statement that is accepted as true)