Presentation constructing a pentagon

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Presentation constructing a pentagon

  1. 1. Stonemasonry Department 2013Prepare Templates and MouldsConstructing a Pentagon
  2. 2. Constructing a PentagonBegin by marking acircle with thecentre point C.C
  3. 3. Constructing a PentagonBACBegin by marking acircle with thecentre point C.Mark the diameterof the circle to formline AB
  4. 4. Constructing a PentagonBACBegin by marking acircle with thecentre point C.Mark the diameterof the circle to formline ABMark aperpendicular toline AB to form lineDC using linebisectionD
  5. 5. Constructing a PentagonBACBegin by marking acircle with thecentre point C.Mark the diameterof the circle to formline ABMark aperpendicular toline AB to form lineDC using linebisectionDMark aperpendicular toline DC to formpoint E using linebisectionE
  6. 6. Constructing a PentagonBACConstruct a circlewith centre point Ewith the diameterDCD E
  7. 7. Constructing a PentagonBACConstruct a circlewith centre point Ewith the diameterDCDExtend a linethrough points Band E to formpoints F and GEFG
  8. 8. Constructing a PentagonBACConstruct a circlewith centre point Ewith the diameterDCDExtend a linethrough points Band E to formpoints F and GEFGH JFrom centre pointB mark an arc withradius BG tointersect the circleforming points Hand J
  9. 9. Constructing a PentagonBACConstruct a circlewith centre point Ewith the diameterDCDExtend a linethrough points Band E to formpoints F and GEFGFrom centre pointB mark an arc withradius BG tointersect the circleforming points Hand JH JFrom centre pointB mark an arc withradius BG tointersect the circleforming points Kand MK M
  10. 10. Constructing a PentagonBACConstruct a circlewith centre point Ewith the diameterDCDExtend a linethrough points Band E to formpoints F and GEFGFrom centre pointB mark an arc withradius BG tointersect the circleforming points Hand JH JFrom centre pointB mark an arc withradius BG tointersect the circleforming points Kand MK M
  11. 11. Constructing a PentagonBACComplete thepentagon byconstructing linesHK, KA, AM, MJand JHD EFGH JK M
  12. 12. Developed by The Stonemasonry DepartmentCity of Glasgow College2013

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