GEOMETRY BASICS

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Across
  1. 1. extends indefinitely in one direction
  2. 3. points that lie on the same plane
  3. 5. a flat surface that extends indefinitely in all directions
  4. 7. points that lie on the same line
  5. 8. two angles with measures that have a sum of 90 degrees
  6. 10. adjacent angles that are supplementary
  7. 11. a line, ray or segment that divides and angle or segment into two equal parts
  8. 13. part of a line consisting of two endpoints
  9. 15. angles congruent angles that are across from each other on intersecting lines
Down
  1. 2. two angles that share a common vertex and side
  2. 4. two lines that intersect at a 90 degree angle
  3. 6. the intersection of two rays at a common endpoint
  4. 9. a location with no size or shape
  5. 12. two angles with measures that have a sum of 180 degrees
  6. 14. extends indefinitely in both directions