A course of practical geometry for mechanicsSimpkin and Marshall, 1843 - 68 sider |
Inni boken
Resultat 1-5 av 36
Side 5
... give the meaning of each thing referred to , clearly and concisely ; such expla- nations of names are called definitions . For example , if a pupil were asked " what is a line ? " it is probable the question would be proposed thus , " ...
... give the meaning of each thing referred to , clearly and concisely ; such expla- nations of names are called definitions . For example , if a pupil were asked " what is a line ? " it is probable the question would be proposed thus , " ...
Side 6
William Pease. II . A Line is length without breadth . It may here also be repeated that , although the student must ... given , apply literally only to Theoretical Geometry , for the eye and hand of a draughtsman cannot avoid errors in ...
William Pease. II . A Line is length without breadth . It may here also be repeated that , although the student must ... given , apply literally only to Theoretical Geometry , for the eye and hand of a draughtsman cannot avoid errors in ...
Side 7
... given to objects which would require more paper than could be spared to assign to the horizon its true position ; but this is never forgotten either by the experienced draughts- man , or the judicious connoisseur . 4. A vertical line is ...
... given to objects which would require more paper than could be spared to assign to the horizon its true position ; but this is never forgotten either by the experienced draughts- man , or the judicious connoisseur . 4. A vertical line is ...
Side 16
... lines is a rectangle , having one of the given lines for its base , and the other for its height . 55. A Multiple of a line or figure , is another line or figure that is exactly 2 , 3 , 4 , or any other number of times as large as the first ...
... lines is a rectangle , having one of the given lines for its base , and the other for its height . 55. A Multiple of a line or figure , is another line or figure that is exactly 2 , 3 , 4 , or any other number of times as large as the first ...
Side 17
... a straight line is to lengthen it in the same straight line . 61. A Generatrix is that by which something is generated ; thus , to give motion to a point , it becomes a generatrix , and a line is the result . In like manner a line may be ...
... a straight line is to lengthen it in the same straight line . 61. A Generatrix is that by which something is generated ; thus , to give motion to a point , it becomes a generatrix , and a line is the result . In like manner a line may be ...
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Vanlige uttrykk og setninger
60 degrees altitude angle equal arc or angle Bisect called centre chords shall form circumference curvilineal cutting A B decagon describe a circle describe a regular describe an arc describe arcs cutting diagonals diameter dodecagon Draw a line Draw chords draw lines Draw the line ellipse equilateral triangle Euclid Euclid's Elements EXAMPLE generatrix geometry given angle given circle given line given point given right line given triangle gonals heptagon inches long inscribe isosceles triangle Join length Let A B line 2 inches line A B line parallel LVIII number of degrees number of equal parallel ruler parallelogram pentagon perpendicular plane point of intersection protractor radii radius ratio rectangle regular nonagon regular polygon rhombus right angles right-angled triangle segment square equal straight line superficies tangent trapezium triangle being given triangle equal triangle required vertex vertical angle Vide Def vide Prob
Populære avsnitt
Side 8 - A plane rectilineal angle is the inclination of two straight lines to one another, -which meet together, but are not in the same straight line.
Side 10 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Side 9 - CHG; and they are adjacent angles; but when a straight line standing on another straight line makes the adjacent angles equal to one another...
Side 9 - A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another.
Side 13 - Of four-sided figures, a SQUARE is that which has all its sides equal, and all its angles right angles.
Side 9 - 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.
Side 14 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Side 8 - A plane angle is the inclination of two lines to one another* in a plane, which meet together, but are not in the same direction.
Side 13 - A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles.
Side 8 - DBC, or CBD ; but, if there be only one angle at a point, it may be expressed by a letter placed at that point ; as the angle at E.