The geometry, by T. S. Davies. Conic sections, by Stephen FenwickJ. Weale, 1853 |
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Σελίδα 240
... plane obliquely the section will be an ellipse . 12. Show how to draw a ... projecting point ( the eye in the first case and the luminous body in the ... projected may either be : 240 PROJECTION .
... plane obliquely the section will be an ellipse . 12. Show how to draw a ... projecting point ( the eye in the first case and the luminous body in the ... projected may either be : 240 PROJECTION .
Σελίδα 243
... plane upon the plane of pro- jection , and giving that plane by means of its trace and inclination . 14. In every ... projecting plane ) with the given line ; and the trace of this plane on the plane of projection will ( Art . 7 ) ...
... plane upon the plane of pro- jection , and giving that plane by means of its trace and inclination . 14. In every ... projecting plane ) with the given line ; and the trace of this plane on the plane of projection will ( Art . 7 ) ...
Σελίδα 246
... plane Aaa , of the system ( Fig . 1 of the Prop . ) to be turned about Aa ... projecting upon " oblique sites , " which is often employed in military ... projection of the given line . struction . 246 PROJECTIONS .
... plane Aaa , of the system ( Fig . 1 of the Prop . ) to be turned about Aa ... projecting upon " oblique sites , " which is often employed in military ... projection of the given line . struction . 246 PROJECTIONS .
Σελίδα 247
... projections of B , A ; and the line a , b , is the projection sought . To find the inclination of the line AB to the plane of projec- tion , if we draw in the projecting plane of AB the line BC parallel to the plane of projection , this ...
... projections of B , A ; and the line a , b , is the projection sought . To find the inclination of the line AB to the plane of projec- tion , if we draw in the projecting plane of AB the line BC parallel to the plane of projection , this ...
Σελίδα 253
... plane through Aa , Bb , will be the projecting plane of AB , and AB , ab will meet in C the trace of AB . But we have here given the points a , b , and the magnitudes of Aa , Bb at right angles to the plane , and therefore to the line ...
... plane through Aa , Bb , will be the projecting plane of AB , and AB , ab will meet in C the trace of AB . But we have here given the points a , b , and the magnitudes of Aa , Bb at right angles to the plane , and therefore to the line ...
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ABC is equal ABCD adjacent angles angle ABC angle BAC axis bisected centre circle ABC circumference coincide cone construction coordinate planes described Descriptive Geometry diameter dicular dihedral angles draw edges ellipse equal angles equiangular equimultiples given line given point given straight line greater hence horizontal hyperbola inclination intersection join less Let ABC Let the plane line BC lines drawn magnitudes meet multiple orthograph parabola parallel planes parallelogram parallelopiped perpen perpendicular perpendicular to MN plane MN plane of projection plane parallel plane PQ prisms profile angles profile plane projecting plane Prop Q. E. D. PROPOSITION ratio rectangle rectangle contained rectilineal figure remaining angle respectively right angles SCHOLIUM segment sides six right sphere spherical angle tangent THEOR trace triangle ABC trihedral vertex Whence Wherefore