geometry crossword

1234567891011121314151617181920
Across
  1. 4. opposite sides are parelle; opposite sides are congruent
  2. 5. two lines that are intersecting at a 90 degrees angle
  3. 12. an exterior is always equal to the sum of the two non-adjacent interior angles
  4. 14. 3/4= -4/3, 2= -1/2
  5. 16. angle greater than 180 degrees
  6. 17. have the same slope
  7. 18. non-coplanar lines that never intersect
  8. 20. A flat surface made up of points and extended indefinitely in all directions
Down
  1. 1. points that lie on the same line
  2. 2. a measurable part of a line consisting of 2 end points
  3. 3. pair adjacent angles that are supplementary combined, they form a straight line
  4. 6. 2 congruent sides are called legs, legs intersect at a vertex
  5. 7. angle less than 90 degrees a right angle that is 90 degrees
  6. 8. the study of a triangles measurements
  7. 9. planes that never intersect
  8. 10. Y=Mx+b, M= slope, b=y-intercept
  9. 11. a location is a location with no size or shape
  10. 13. the common endpoint of an angle ( where the sides intersect)
  11. 15. lines are opposite recipicals
  12. 19. 2 angles directly across from each other and intersecting lines