A course of practical geometry for mechanicsSimpkin and Marshall, 1843 - 68 páginas |
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Página 1
... name of His Royal Highness Prince Albert , the Patron of the Westminster Literary , Scientific , and Mechanics ' Institution ; whose noble example has doubtless induced many other distinguished per- sonages to consider the claims , and ...
... name of His Royal Highness Prince Albert , the Patron of the Westminster Literary , Scientific , and Mechanics ' Institution ; whose noble example has doubtless induced many other distinguished per- sonages to consider the claims , and ...
Página 5
... names re- quire to be explained , or the novice cannot learn the science to which they apply : the explanations ought further to be such as to give the meaning of each thing referred to , clearly and concisely ; such expla- nations of names ...
... names re- quire to be explained , or the novice cannot learn the science to which they apply : the explanations ought further to be such as to give the meaning of each thing referred to , clearly and concisely ; such expla- nations of names ...
Página 6
... name from the Horizon , which is the most distant edge of the sea , as seen on a clear calm day . The true Horizon partakes of the con- vex form of the earth , and in scientific calculations , this must be taken into the account ; but ...
... name from the Horizon , which is the most distant edge of the sea , as seen on a clear calm day . The true Horizon partakes of the con- vex form of the earth , and in scientific calculations , this must be taken into the account ; but ...
Página 13
... other figures referred to here , by the two following names : - 28. A trapezium is a quadrilateral which has not either pair of its opposite sides parallel . B Only two of its angles can be equal , or PRACTICAL GEOMETRY . 13.
... other figures referred to here , by the two following names : - 28. A trapezium is a quadrilateral which has not either pair of its opposite sides parallel . B Only two of its angles can be equal , or PRACTICAL GEOMETRY . 13.
Página 17
... names is made by adding the letter s to the singular ; as , tangent , tangents , & c . A degree is divided into sixty equal parts , called minutes ; these into sixty equal parts , called seconds ; and these also into sixty equal parts ...
... names is made by adding the letter s to the singular ; as , tangent , tangents , & c . A degree is divided into sixty equal parts , called minutes ; these into sixty equal parts , called seconds ; and these also into sixty equal parts ...
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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.