A course of practical geometry for mechanicsSimpkin and Marshall, 1843 - 68 sider |
Inni boken
Resultat 1-5 av 5
Side 4
... pencil , apply them to his daily occupation . The first problem is explained at full length , in order that the student may know precisely how to use his instruments ; after which it is presumed that he will be able to understand the ...
... pencil , apply them to his daily occupation . The first problem is explained at full length , in order that the student may know precisely how to use his instruments ; after which it is presumed that he will be able to understand the ...
Side 18
... pencil legs to fit in the compasses ; and an ivory protractor , with scales engraved on it . A larger set contains , besides these , a pair of dividers , a long drawing pen , bow pen , and a bow pen- cil ; the two latter for circles and ...
... pencil legs to fit in the compasses ; and an ivory protractor , with scales engraved on it . A larger set contains , besides these , a pair of dividers , a long drawing pen , bow pen , and a bow pen- cil ; the two latter for circles and ...
Side 19
... pencil , to fix the process of construction in the student's memory . Note 2. Where dimensions are given in inches , in the Examples for Practice , feet , or other magnitudes may be substituted if wanted . PROBLEMS . PROBLEM I. To ...
... pencil , to fix the process of construction in the student's memory . Note 2. Where dimensions are given in inches , in the Examples for Practice , feet , or other magnitudes may be substituted if wanted . PROBLEMS . PROBLEM I. To ...
Side 20
... pencil ) any letters at the ex- tremities of these lines , ( as BA C , in the diagram annexed , ) simply that the lines may be easily referred to . 2. Having fixed the lead pencil leg in the compasses , place the steel leg very ...
... pencil ) any letters at the ex- tremities of these lines , ( as BA C , in the diagram annexed , ) simply that the lines may be easily referred to . 2. Having fixed the lead pencil leg in the compasses , place the steel leg very ...
Side 64
... pencil by hand , ( called " Rough Sketches , " ) of buildings , & c . , writing the dimensions on each part . These will serve as guides to enable him to draw his subject accurately to any given scale . A drawing is never completed till ...
... pencil by hand , ( called " Rough Sketches , " ) of buildings , & c . , writing the dimensions on each part . These will serve as guides to enable him to draw his subject accurately to any given scale . A drawing is never completed till ...
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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.