A course of practical geometry for mechanicsSimpkin and Marshall, 1843 - 68 páginas |
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Página 8
... vertex of the angle , that is , at ' the point in which the straight lines that contain the angle meet one another , is put between the other two ' letters , and one of these two is 6 6 A ' somewhere upon one of those straight lines ...
... vertex of the angle , that is , at ' the point in which the straight lines that contain the angle meet one another , is put between the other two ' letters , and one of these two is 6 6 A ' somewhere upon one of those straight lines ...
Página 9
... vertex being its centre , and the radius taken at pleasure . XIII . " A term or boundary is the extremity of any thing . " XIV . A figure is that which is enclosed by one or more boundaries . It is customary as a matter of convenience ...
... vertex being its centre , and the radius taken at pleasure . XIII . " A term or boundary is the extremity of any thing . " XIV . A figure is that which is enclosed by one or more boundaries . It is customary as a matter of convenience ...
Página 13
... vertex to another of a rectilineal figure : such figure may , by dia- gonals , be divided into as many triangles , minus two , as it has sides . 27. A Rectangle is a right - angled parallelogram . XXXIV . All other four - sided figures ...
... vertex to another of a rectilineal figure : such figure may , by dia- gonals , be divided into as many triangles , minus two , as it has sides . 27. A Rectangle is a right - angled parallelogram . XXXIV . All other four - sided figures ...
Página 15
... vertex projects towards the interior of the figure , it is called a Re - entering angle . Those whose vertices project outwards , are Salient angles . A Solid is that which hath length , breadth , and thick- ness . Vide Def . I. Book XI ...
... vertex projects towards the interior of the figure , it is called a Re - entering angle . Those whose vertices project outwards , are Salient angles . A Solid is that which hath length , breadth , and thick- ness . Vide Def . I. Book XI ...
Página 16
... vertices of the inner figure , touch the sides of the outer one . 48. A right - lined figure is Inscribed in a circle , or the circle Circumscribes it , when all the vertices of the former , touch the circumference of the circle . 49. A ...
... vertices of the inner figure , touch the sides of the outer one . 48. A right - lined figure is Inscribed in a circle , or the circle Circumscribes it , when all the vertices of the former , touch the circumference of the circle . 49. A ...
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Términos y frases comunes
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
Pasajes populares
Página 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.
Página 10 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 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...
Página 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.
Página 13 - Of four-sided figures, a SQUARE is that which has all its sides equal, and all its angles right angles.
Página 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.
Página 14 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Página 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.
Página 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.
Página 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.