An essay on mechanical geometry, explanatory of a set of models1796 |
Dentro del libro
Resultados 1-5 de 6
Página vii
... fufficiently attentive to education to give fuch a scheme support ; and fortunately it cannot alarm any prejudice . The defign is to construct models , at first of the most simple , and afterwards of more complicated machines . The ...
... fufficiently attentive to education to give fuch a scheme support ; and fortunately it cannot alarm any prejudice . The defign is to construct models , at first of the most simple , and afterwards of more complicated machines . The ...
Página xi
... fufficiently clear to be readily understood by young Students ; if they have already acquired a general knowledge of the Rule of Three , in common arithmetic . The Author cannot conclude this Preface without thanking his very ...
... fufficiently clear to be readily understood by young Students ; if they have already acquired a general knowledge of the Rule of Three , in common arithmetic . The Author cannot conclude this Preface without thanking his very ...
Página 4
... fufficiently general . F. 5 . 12. If an angle opens more than a right angle , it is called an Obtufe Angle . 13. If an angle opens lefs than a right F. 3. angle , it is named an Acute Angle . 14. If there are two or more angles meeting ...
... fufficiently general . F. 5 . 12. If an angle opens more than a right angle , it is called an Obtufe Angle . 13. If an angle opens lefs than a right F. 3. angle , it is named an Acute Angle . 14. If there are two or more angles meeting ...
Página 20
... fufficiently clear without cutting the figure . For the angle AFG is equal to the angle EFB by Theorem the 5th ; and the angle FGD is alfo equal to the angle EFB by Theorem 6th ; therefore being equal to one and the fame thing they must ...
... fufficiently clear without cutting the figure . For the angle AFG is equal to the angle EFB by Theorem the 5th ; and the angle FGD is alfo equal to the angle EFB by Theorem 6th ; therefore being equal to one and the fame thing they must ...
Página 21
... fufficiently clear merely to conceive it done ) the line DE may be placed on AB , the point D on A , and the point E on B ; then the angle EDF , being equal to the angle BAC , the line DF will fall on the line AC ; and the point F on C ...
... fufficiently clear merely to conceive it done ) the line DE may be placed on AB , the point D on A , and the point E on B ; then the angle EDF , being equal to the angle BAC , the line DF will fall on the line AC ; and the point F on C ...
Otras ediciones - Ver todas
An Essay on Mechanical Geometry, Explanatory of a Set of Models Benjamin Donne Sin vista previa disponible - 2019 |
An Essay on Mechanical Geometry, Explanatory of a Set of Models Benjamin Donne Sin vista previa disponible - 2016 |
Términos y frases comunes
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
Pasajes populares
Página 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.
Página 11 - Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.
Página 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...
Página 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.
Página 12 - ... the three angles of a triangle are together equal to two right angles, although it is not known to all.
Página 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.
Página 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.
Página 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.
Página 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...
Página 40 - SIMILAR cones and cylinders have to one another the triplicate ratio of that which the diameters of their bases have...