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An Essay on Mechanical Geometry, Explanatory of a Set of Models
Podgląd niedostępny - 2019
180 degrees alſo arithmetic baſe Book bounded breadth Briſtol called circle circumference common compaſſes conceived cone conſequently contained convenient Copies Corollary cover cube cylinder Definition demonſtrations deſcribe diameter direct diſtance divided draw drawn equal Eſq Euclid exactly extremes feet figure firſt four gallons Geometry give given globe greater half height Hence inches itſelf length leſs leſſer London marked mathematical mean meaſure mechanical meeting method moſt multiplied muſt named Note object oppoſite parallel parallelogram perpendicular piece planes pole preſent PROBLEM proportion propoſitions prove purpoſe pyramid radius reaſon rectangle repreſent reſpect right angles right line root rule ruler ſame ſhall ſhould ſide sides ſimilar ſmall ſolid ſome ſquare taken Theorem theſe thing third thoſe triangle uſe whole yards young
Strona 6 - 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.
Strona 25 - 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...
Strona 26 - 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.
Strona 14 - ... the three angles of a triangle are together equal to two right angles, although it is not known to all.
Strona 39 - 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.
Strona 12 - 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.
Strona 67 - 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.
Strona 86 - ... 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...