Elements of Descriptive GeometryMacmillan and Company, 1878 - 202 páginas |
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Página 4
... describe a plane normal to that axis . Cor . 3. Through any given point , either within or with- out a plane , only one normal can be drawn to the plane . For if it were possible to draw more than one , each of them would be ...
... describe a plane normal to that axis . Cor . 3. Through any given point , either within or with- out a plane , only one normal can be drawn to the plane . For if it were possible to draw more than one , each of them would be ...
Página 34
... describe the circle AA , Draw the line p'b making the angle a'p'b equal to ß , and from a ' draw a'b perpendicular to p'b ; with centre p ' and radius p'b describe a circle meeting xy in a ,, and draw a 4 , perpendicular to xy to meet ...
... describe the circle AA , Draw the line p'b making the angle a'p'b equal to ß , and from a ' draw a'b perpendicular to p'b ; with centre p ' and radius p'b describe a circle meeting xy in a ,, and draw a 4 , perpendicular to xy to meet ...
Página 36
... describe the triangle bac , having the sides ba , ca equal to BA and CA respectively . The angle bac will be the angle required . - Proof . The line bc BC , since BC is horizontal ( Theor . xv . Cor . 1 ) . Therefore the three sides of ...
... describe the triangle bac , having the sides ba , ca equal to BA and CA respectively . The angle bac will be the angle required . - Proof . The line bc BC , since BC is horizontal ( Theor . xv . Cor . 1 ) . Therefore the three sides of ...
Página 80
... describe an arc of a circle with 1 ′′ radius cutting them at A , and C. Join BA , and BC and produce the lines to meet xy at F and G. Then BFb = BA ̧m and BGbBCn are the inclinations of the two sides of the pentagon meeting at B. From ...
... describe an arc of a circle with 1 ′′ radius cutting them at A , and C. Join BA , and BC and produce the lines to meet xy at F and G. Then BFb = BA ̧m and BGbBCn are the inclinations of the two sides of the pentagon meeting at B. From ...
Página 100
... describe a circle with the radius SP ,, cutting PN produced in the point P. NSP , is then the rabatment of the angle whose projection is NSp : therefore NSP1 = 7 . A and B may now be found as in the last problem . P S P2 Fig . 73 . PA ...
... describe a circle with the radius SP ,, cutting PN produced in the point P. NSP , is then the rabatment of the angle whose projection is NSp : therefore NSP1 = 7 . A and B may now be found as in the last problem . P S P2 Fig . 73 . PA ...
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Términos y frases comunes
abcd axis centre common section cone of revolution conical surface Construction Crown 8vo curve of intersection cylinder diameter dicular dihedral angles distance draw a line draw a tangent Draw the projections drawn edge ELEMENTARY TREATISE ellipse equal faces Fcap find the point find the projections find the traces Geometry given line given point ground line horizontal plane horizontal projection horizontal trace inclined at 50 meet numerous Illustrations octahedron Owens College P. G. TAIT parallel to PQ perpen perpendicular perpendicular to MN Philosophy plane containing plane LMN plane of projection plane parallel plane required point of intersection position Prob PROBLEM Professor Proof rabatment radius required to find respectively revolve right angles ruled surface SCIENCE SCIENTIFIC CATALOGUE Second Edition side straight line surface of revolution tangent plane Theor THEOREM tion touch trihedral vertex vertical plane vertical projection vertical trace W. K. CLIFFORD
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