The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
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Σελίδα 42
... Parallel lines are such as are equi - distant from each other , as AB , CD . fig . 9 . 31. A figure if a space bounded by a line or lines . If the lines be right it is called a recti- lineal figure , if curved it is called a curvilineal ...
... Parallel lines are such as are equi - distant from each other , as AB , CD . fig . 9 . 31. A figure if a space bounded by a line or lines . If the lines be right it is called a recti- lineal figure , if curved it is called a curvilineal ...
Σελίδα 43
... parallels have the same height , since all the perpendiculars are equal from the nature of parallels . 41. Any figure of four sides is called a quadri- lateral figure . 42. Quadrilateral figures , whose opposite sides are parallel , are ...
... parallels have the same height , since all the perpendiculars are equal from the nature of parallels . 41. Any figure of four sides is called a quadri- lateral figure . 42. Quadrilateral figures , whose opposite sides are parallel , are ...
Σελίδα 46
... parallel , be produced towards their nearest distance , they will intersect each other . 9. Things which mutually agree with each other , are equal . NOTES . A theorem is a proposition , wherein something is proposed to be demonstrated ...
... parallel , be produced towards their nearest distance , they will intersect each other . 9. Things which mutually agree with each other , are equal . NOTES . A theorem is a proposition , wherein something is proposed to be demonstrated ...
Σελίδα 48
... parallels , as GH does AB and CD , then , 1. Their external angles are equal to each other , that is , GEB CFH . 2 ... parallel to CD , they may be considered as one broad line , crossed by another ine , as GH ; ( then by the last theo ...
... parallels , as GH does AB and CD , then , 1. Their external angles are equal to each other , that is , GEB CFH . 2 ... parallel to CD , they may be considered as one broad line , crossed by another ine , as GH ; ( then by the last theo ...
Σελίδα 49
... parallel to AB ; then since BD cuts the two parallel lines BA , CE ; the angle ECD = B , ( by part 3. of the last theo . ) and again , since AC cuts the same parallels , the angle ACEA ( by part . 2. of the last . ) Therefore ECD + AČE ...
... parallel to AB ; then since BD cuts the two parallel lines BA , CE ; the angle ECD = B , ( by part 3. of the last theo . ) and again , since AC cuts the same parallels , the angle ACEA ( by part . 2. of the last . ) Therefore ECD + AČE ...
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