The geometry, by T. S. Davies. Conic sections, by Stephen FenwickJ. Weale, 1853 |
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Seite 138
... pictures of the figures instead of models of them in books . The picture in a plane proposition has a similitude in its general features to the perfect one which the mind contemplates in its investigations ; but this is lost when we use ...
... pictures of the figures instead of models of them in books . The picture in a plane proposition has a similitude in its general features to the perfect one which the mind contemplates in its investigations ; but this is lost when we use ...
Seite 240
... picture or projection of the object . This projection is the perspective of the object . ( b ) If any opaque figure be interposed between a light and a screen , the shadow of the figure upon the screen is the projection of the figure ...
... picture or projection of the object . This projection is the perspective of the object . ( b ) If any opaque figure be interposed between a light and a screen , the shadow of the figure upon the screen is the projection of the figure ...
Seite 313
... , when they both fall within the limits of the picture . Draw any line y , d , to cut the horizontal traces of the given planes in = Y11 , and the horizontal projection a , B CONSTRUCTIONS RELATING TO THE PLANE , LINE , AND POINT . 313.
... , when they both fall within the limits of the picture . Draw any line y , d , to cut the horizontal traces of the given planes in = Y11 , and the horizontal projection a , B CONSTRUCTIONS RELATING TO THE PLANE , LINE , AND POINT . 313.
Seite 357
... picture - plane ; E the place of the eye , given by the projectors EF , EO , or by FK , KO ; G similarly the place of " the point to be put in perspective , " given by the projectors GH , GM , or by ML , LH : then the problem is , to ...
... picture - plane ; E the place of the eye , given by the projectors EF , EO , or by FK , KO ; G similarly the place of " the point to be put in perspective , " given by the projectors GH , GM , or by ML , LH : then the problem is , to ...
Seite 358
... picture — a disadvantage which a draughtsman of very moderate practice can fully estimate . This disadvantage is , how- ever , common to most methods usually proposed , and is by no means peculiar to this ; at the same time , as a key ...
... picture — a disadvantage which a draughtsman of very moderate practice can fully estimate . This disadvantage is , how- ever , common to most methods usually proposed , and is by no means peculiar to this ; at the same time , as a key ...
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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