Orthographic system

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Orthographic system

  1. 1. THE ORTHOGRAPHIC SYSTEM
  2. 2. (1746 –1818) WASGASPAR MONGE A FRENCH MATHEMATICIAN, A REVOLUTIONARY, AND THE INVENTOR OF DESCRIPTIVE GEOMETRY, THE THEORETICAL BASIS ON WHICH TECHNICAL DRAWING IS BASED. DURING THE FRENCH REVOLUTION HE SERVED AS A MINISTER OF THE MARINE AND WAS INVOLVED IN THE REFORMATION OF THE FRENCH EDUCATIONAL SYSTEM, FOUNDING THE ÉCOLE POLYTECHNIQUE.
  3. 3. FIRST SECOND QUADRANT QUADRANT VERTICAL PLANE HORIZONTAL PLANE GROUND LINE FOURTH THIRD QUADRANTQUADRANT
  4. 4. REPRESENTATION OF AN OBJECT VERTICAL PROJECTION OBSERVER HORIZONTAL PROJECTION
  5. 5. A´A
  6. 6. a´# a´ Aa´ a a
  7. 7. a´# LEVEL a´ DISTANCE A OR LEVEL HEIGHT LEVEL OR OR HEIGHT HEIGHT DISTANCEa´ a DISTANCE a
  8. 8. nts and straight linesstem.yed in Technicalchnical Drawinged about thee instruments.ey are drawing.s:e the task. instruments.graphic system.e accurate, neat uation criteria.)
  9. 9. A’ A A’A’ A A
  10. 10. B’ BB’ B’ B B
  11. 11. C’ C C’C’ C C
  12. 12. D’ D D’D’ D D
  13. 13. E’ E E E’ E E
  14. 14. F’ F F’ F
  15. 15. A’ D’ C’ B’ D E’ F’ FA C E B
  16. 16. R’ R V’ R’ V R RH’ H
  17. 17. V’ R’ H’ V R V’ H R’ V R RH’ H
  18. 18. R’ R R R’V’ RV
  19. 19. V’ R’ V R R R’V’ RV
  20. 20. R’ R R R’ RH’ H
  21. 21. R’ H’ R H R R’ RH’ H
  22. 22. 5.2 Drawing different types of straight line Object • To dra quadra • To use Materi • Graphi • 45º and • Ruler a Presen • This ac • The ta Studen • The stu proced handlin Evalua Assess usi 1. Correc 2. Proper 3. Accura 4. Turned (See Te

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