An essay on mechanical geometry, explanatory of a set of models1796 |
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Seite 17
... convenient radius defcribe the femicirle adcb ; then is the arc be the measure of the angle DCB , arc cd of the angle DCE , and the arc da the measure of the angle ECA ; but these three arcs compleat the femicircle adcb , or the three ...
... convenient radius defcribe the femicirle adcb ; then is the arc be the measure of the angle DCB , arc cd of the angle DCE , and the arc da the measure of the angle ECA ; but these three arcs compleat the femicircle adcb , or the three ...
Seite 18
... convenient radius defcribe a circle abcd , and it is manifeft that the measures of the 4 angles aCd , dCc , cCb , and bCa , are together equal to 360 degrees ; and if ever fo many cross each other in the fame point , all the angles ...
... convenient radius defcribe a circle abcd , and it is manifeft that the measures of the 4 angles aCd , dCc , cCb , and bCa , are together equal to 360 degrees ; and if ever fo many cross each other in the fame point , all the angles ...
Seite 47
... convenient distance from C ( the further the more accurate ) viz . in D , with the fame extent describe the arc cd ; then by the fide of a ruler draw the line EF to touch but not cut the arcs , and it is manifeftly the parallel line ...
... convenient distance from C ( the further the more accurate ) viz . in D , with the fame extent describe the arc cd ; then by the fide of a ruler draw the line EF to touch but not cut the arcs , and it is manifeftly the parallel line ...
Seite 49
... convenient . We have now given all the Problems of this nature , that are neceffary for our pre- fent purpofe ; and therefore must refer those who are defirous of feeing a greater variety of useful Problems , with their demonftra- tions ...
... convenient . We have now given all the Problems of this nature , that are neceffary for our pre- fent purpofe ; and therefore must refer those who are defirous of feeing a greater variety of useful Problems , with their demonftra- tions ...
Seite 57
... convenient diftance ; at that place a mark is made , and at every 50 feet diftance is another mark or knot ; and it is com- puted , that as many of these knots as run out in half a minute , so many miles the fhip fails in an hour . A ...
... convenient diftance ; at that place a mark is made , and at every 50 feet diftance is another mark or knot ; and it is com- puted , that as many of these knots as run out in half a minute , so many miles the fhip fails in an hour . A ...
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An Essay on Mechanical Geometry, Explanatory of a Set of Models Benjamin Donne Keine Leseprobe verfügbar - 2019 |
An Essay on Mechanical Geometry, Explanatory of a Set of Models Benjamin Donne Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
180 degrees alfo alſo Analemma angle ACD arithmetic arithmetical mean bafe baſe bifect Book breadth Briſtol called circle circumfcribing compaffes conceived cone confequently contained Corollary croffing cylinder demonftrations deſcribe diameter diſtance divided effay Euclid exactly expreffed faid fame number femicircle fhall fhewn fhould fides fignifies figure fimilar fmall folid fome four numbers fquare feet fruftum ftands ftraight fubtract fufficiently furface gallons geometrical mean Geometricians Geometry globe height Hence inftance interfect large cube length manifeft meaſure multiply half muſt number of degrees number of feet numbers are proportional oppofite orem parallel lines parallel ruler parallelogram perpendicular planes pofition pole prefent priſm PROBLEM propofitions purpoſe pyramid radius reaſon rectangle regular polygon repreſent reſpect rhombus right angles right line ſcheme Scholium ſet ſhadow ſhall ſquare Theorem theſe Thomas Beddoes thoſe three angles triangle ABC whole yards
Beliebte Passagen
Seite 4 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Seite 11 - Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.
Seite 23 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Seite 24 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Seite 12 - ... the three angles of a triangle are together equal to two right angles, although it is not known to all.
Seite 37 - A right circular cone is often called a cone of revolution, because it can be generated by the revolution of a right-angled triangle about one of its shorter sides.
Seite 10 - POSTULATES. 1. LET it be granted that a straight line may be drawn from any one point to any other point. 2. That a terminated straight line may be produced to any length in a straight line. 3. And that a circle may be described from any centre, at any distance from that centre.
Seite 65 - Multiply half the circumference by half the diameter, and the product will be the area. Or, divide the product of the whole circumference and diameter -by 4, and the quotient will be the area. 2. Multiply the square of the diameter by .7854, and the product will be the area.
Seite 84 - ... reafonable creatures •, for though we all call ourfelves fo, becaufe we are born to it if we pleafe, yet we may truly fay Nature gives us but the...
Seite 40 - SIMILAR cones and cylinders have to one another the triplicate ratio of that which the diameters of their bases have...