Geometry Terms

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Across
  1. 1. (of an angle) less than 90 degrees
  2. 4. of an angle, between 90 and 180 degrees
  3. 8. (of a triangle) having two sides of equal length
  4. 9. coinciding when superimposed
  5. 10. having a common boundary or edge
  6. 11. intersecting at or forming right angles
  7. 12. the extent of a two-dimensional surface within a boundary
Down
  1. 2. the length of the closed curve of a circle
  2. 3. two angles whose sum is a right angle
  3. 5. the side of a right triangle opposite the right angle
  4. 6. the length of a straight line through the center of a circle
  5. 7. the space between two lines or planes that intersect