Library of Useful Knowledge: Mathematics I.Baldwin and Cradock, 1838 |
Inni boken
Resultat 1-5 av 12
Side 208
... Projection by Lines di- verging and by Lines parallel . It is not here intended to enter at large upon the subject of perspective , or to anticipate in any manner the rules by which it affords such material assistance to the draughtsman ...
... Projection by Lines di- verging and by Lines parallel . It is not here intended to enter at large upon the subject of perspective , or to anticipate in any manner the rules by which it affords such material assistance to the draughtsman ...
Side 209
... perspective projection of a straight line is a straight line ; and if any point of the original straight line be in the vertical plane , the straight line which is its projection shall be of unlimited extent . Let AB be the plane of ...
... perspective projection of a straight line is a straight line ; and if any point of the original straight line be in the vertical plane , the straight line which is its projection shall be of unlimited extent . Let AB be the plane of ...
Side 210
... projections shall be parallel to one another . Therefore , & c . PROP . 4 . The perspective projections of parallel straight lines , which cut the plane of projection , are straight lines , which are not parallels , but which pass ...
... projections shall be parallel to one another . Therefore , & c . PROP . 4 . The perspective projections of parallel straight lines , which cut the plane of projection , are straight lines , which are not parallels , but which pass ...
Side 211
... projection upon the plane A B is a straight line ( IV . 2. ) . Cor . 2. If the original curve cuts the vertical ... perspective projection of a straight line which touches any curve is a straight line which touches the pro- jection of ...
... projection upon the plane A B is a straight line ( IV . 2. ) . Cor . 2. If the original curve cuts the vertical ... perspective projection of a straight line which touches any curve is a straight line which touches the pro- jection of ...
Side 212
... projection g h in the same point T. and let the plane of the curve MPQR be produced to meet the plane A B in the ... perspective projection of a straight line which cuts a curve is a straight line which cuts the projection of the curve ...
... projection g h in the same point T. and let the plane of the curve MPQR be produced to meet the plane A B in the ... perspective projection of a straight line which cuts a curve is a straight line which cuts the projection of the curve ...
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Vanlige uttrykk og setninger
A B C ABCD altitude axes axis base bisected centre chord circle circumference circumscribed common measure common section cone conic section contained convex surface curve cylinder diameter difference dihedral angle distance divided draw drawn ellipse equal angles equation formula Geometry given point given straight line gles greater hence hyperbola hypotenuse inscribed join Latus Rectum less likewise locus magnitudes meet parabola parallel parallelogram parallelopiped pass perimeter perpendicular perspective projection plane polygon prism produced projection PROP proportionals proposition pyramid quadrilateral radii radius ratio rectangle rectilineal figure regular polygon respectively right angles Scholium segment similar sine solid angles solid content sphere spherical angle spherical arc spherical triangle square tangent three sides triangle ABC values vertex vertical