A course of geometrical drawing |
Im Buch
Ergebnisse 1-5 von 27
Seite 5
... tangent , as F G , touching the circle at E. DIRECTIONS . In the study of Geometrical Drawing , the student must provide himself with a case of good instruments ( those made of white metal are the best ) , which comprises the following ...
... tangent , as F G , touching the circle at E. DIRECTIONS . In the study of Geometrical Drawing , the student must provide himself with a case of good instruments ( those made of white metal are the best ) , which comprises the following ...
Seite 20
... of lines marked L , lines of chords marked c , lines of secants marked s , and lines of polygons marked P o L. Upon the other face are lines of sines marked s , and lines of tangents marked r . B Fig . 17 . ୯ e Let A B 18 PRACTICAL.
... of lines marked L , lines of chords marked c , lines of secants marked s , and lines of polygons marked P o L. Upon the other face are lines of sines marked s , and lines of tangents marked r . B Fig . 17 . ୯ e Let A B 18 PRACTICAL.
Seite 25
... tangent to the circle . B Fig . 23 . A a Let ABC be the given circle , and a the given point in the circumference . Join a to b , the centre of the circle , and , through a , draw E D at right angles to a b ; E D is a tangent to the ...
... tangent to the circle . B Fig . 23 . A a Let ABC be the given circle , and a the given point in the circumference . Join a to b , the centre of the circle , and , through a , draw E D at right angles to a b ; E D is a tangent to the ...
Seite 26
... tangent to a circle from a point without . Let a be the given point . Join a b , and upon it describe a semi - circle , cutting the given circle in c . Join a c , and produce it to d ; a d is the tangent required . PROBLEM 10 . To find ...
... tangent to a circle from a point without . Let a be the given point . Join a b , and upon it describe a semi - circle , cutting the given circle in c . Join a c , and produce it to d ; a d is the tangent required . PROBLEM 10 . To find ...
Seite 30
... tangent to the circle as AC ( Prob . 9 ) . From A , draw a chord △ B , making with a c an angle equal to the given angle ; A B D will be the segment required . PROBLEM 15 . To find the centre of a given circle . Fig . 31 . C E B Let ...
... tangent to the circle as AC ( Prob . 9 ) . From A , draw a chord △ B , making with a c an angle equal to the given angle ; A B D will be the segment required . PROBLEM 15 . To find the centre of a given circle . Fig . 31 . C E B Let ...
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
A B C D angle a b c angle B A C angle contained angles to B L base Bisect chord cone conical surface cutting A B describe a circle describe an arc diameter dicular dihedral angle draw a line Draw the plan ellipse feet fourth proportional furlongs geometrical given angle given circle given line given point given straight line hori horizontal distances horizontal plane horizontal trace inches long inclined at 40 isosceles triangle Join a b Let A B C line A B line joining lines drawn mean proportional number of sides parallel to B L pentagon perpen perpendicular to A B plane containing plane inclined plane of projection polygon primary division Prob PROBLEM real length rectangle representative fraction required plane right angles right-angled triangle sector shown square equal tangent transverse distance vertical plane vertical projection vertical trace yards zontal
Beliebte Passagen
Seite 2 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle; and the straight line which stands on the other is called a perpendicular to it.
Seite 12 - Through a given point to draw a line parallel to a given straight line. Let C be the given point, and AB the given line.
Seite 4 - Circle is a plane figure bounded by one uniformly curved line, bed (Fig. 16), called the circumference, every part of which is equally distant from a point within it, called the centre, as a.
Seite 4 - Hexagon, of six sides; a Heptagon, seven; an Octagon, eight; a Nonagon, nine ; a Decagon, ten ; an Undecagon, eleven ; and a Dodecagon, twelve sides.
Seite 23 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sidef. For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides, by drawing straight lines from a point F within the figure to each of its angles.
Seite 23 - A as a centre and radius equal to the sum of the radii of the given circles ; and continue as before, except that BE and AD will now be on opposite sides of AB. The two straight lines which are thus drawn to touch the two given circles can be shewn to intersect AB at the same point. 5. To describe a circle which shall pass through three • given points not in the same straight line. This is solved in Euclid IV. 5. 6. To describe a circle...
Seite 29 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Seite 32 - The projection of a line upon a plane is the locus of the projections of all points of the line upou the plane.
Seite 48 - ... quarter of an inch in depth at several times, allowing sufficient intervals for the fluid to stain the stone in that plane, 4, 3, 2, 1, it has fallen to at the last abstraction. These stains will present a series of horizontal lines or contours, 4, 3, 2, 1, all round the surface of the stone ; and if we examine the stone thus prepared, looking down upon the top, we shall see that the steepness and REPRESENTATION OF THE GROUND.
Seite 57 - IF two parallel planes be cut by another plane, their common sections with it are parallels.* Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with it be EF, GH ; EF is parallel to GH.