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References to 'parallellism in Euclidean plane'
1. $n$-section of line segment with compass and straightedge by pahio
2. affine geometry by CWoo
3. Archimedes' cylinders in cube by pahio
4. Bertrand's problem by PrimeFan
5. Buffon's needle by georgiosl
6. circulation and vorticity by perucho
7. classical Stokes' theorem by stevecheng
8. cognitive science by gprasad
9. comparison of common geometries by Wkbj79
10. compass and straightedge construction of parallel line by pahio
11. conjugate diameters of ellipse by pahio
12. constructing well ordered sets by CWoo
13. corresponding angles in transversal cutting by Wkbj79
14. De Bruijn--Erd\H{o}s theorem by marijke
15. Dehn surgery by bwebste
16. directed segment by drini
17. efficiency by akrowne
18. Euclidean axiom by Hilbert by pahio
19. Euclidean geometry of plane by matte
20. finite plane by marijke
21. Garfield's proof of Pythagorean theorem by rm50
22. geometry as the study of invariants under certain transformations by rspuzio
23. harmonic mean by drini
24. incidence structure by CWoo
25. intercept theorem by pahio
26. isosceles trapezoid by Wkbj79
27. isothetic by lha
28. Jordan triple product by Algeboy
29. Korteweg - de Vries equation by rspuzio
30. Lemoine circle by drini
31. Mercator projection by acastaldo
32. neutral geometry by CWoo
33. non-Euclidean geometry by Wkbj79
34. parallel lines in hyperbolic geometry by Wkbj79
35. parallelism of line and plane by pahio
36. parallelogram by drini
37. parallelogram theorems by pahio
38. pencil by CWoo
39. prismatoid by Mathprof
40. projective plane by yark
41. projective space by rmilson
42. proof of parallelogram theorems by rm50
43. proof of Pythagorean theorem by rspuzio
44. properties of parabola by pahio
45. quantum logic by CWoo
46. quotient category by CWoo
47. reductio ad absurdum by gribskoff
48. relation composition by Jon Awbrey
49. Smarandache geometries by jonnathan
50. speedup by akrowne
51. strain transformation by CWoo
52. theory of organismic sets and mathematical relations by bci1
53. trapezoid by Wkbj79
54. vector field by mathcam