Practical geometry for the architect, engineer, surveyor and mechanic |
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Page xi
... measure the curvature of curved lines 94. In a given circle to inscribe a regular hexagon , or figure of six equal sides . 288 63 63 63 • 64 6888 64 65 688888 66 66 CHAPTER III . CONIC SECTIONS . 102. Definitions .-- Ellipse , parabola ...
... measure the curvature of curved lines 94. In a given circle to inscribe a regular hexagon , or figure of six equal sides . 288 63 63 63 • 64 6888 64 65 688888 66 66 CHAPTER III . CONIC SECTIONS . 102. Definitions .-- Ellipse , parabola ...
Page 1
... a circle be drawn from O as a centre and with any radius , then the angle at O is measured by the arc which it subtends , the arc and the angle increasing and decreasing together ; when B the angle COA is double the angle BOA , the.
... a circle be drawn from O as a centre and with any radius , then the angle at O is measured by the arc which it subtends , the arc and the angle increasing and decreasing together ; when B the angle COA is double the angle BOA , the.
Page 3
... measuring equal distances A G and BF from each end , and then bisecting , by the foregoing method , the line between ... measure AC equal to three times . AD , and AB equal to four times AD . From A as a cen- tre , and with AC for radius ...
... measuring equal distances A G and BF from each end , and then bisecting , by the foregoing method , the line between ... measure AC equal to three times . AD , and AB equal to four times AD . From A as a cen- tre , and with AC for radius ...
Page 4
... measure two equal lengths from C to A B , namely , CA and CB , and to bisect the line A B in H ; then the line HC will be perpendicular to A B. D Fig . 5 . C 5. From a given point to draw a right line equal in length to a given line ...
... measure two equal lengths from C to A B , namely , CA and CB , and to bisect the line A B in H ; then the line HC will be perpendicular to A B. D Fig . 5 . C 5. From a given point to draw a right line equal in length to a given line ...
Page 7
... , consequently the angle GAD is one- fifteenth of the right angle . By measuring DG along the quadrant BE , we can divide it into fifteen equal. THE STRAIGHT LINE . 7 To divide a right-angle into five or fifteen equal parts.
... , consequently the angle GAD is one- fifteenth of the right angle . By measuring DG along the quadrant BE , we can divide it into fifteen equal. THE STRAIGHT LINE . 7 To divide a right-angle into five or fifteen equal parts.
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Common terms and phrases
A B fig arc cutting arch architectural arcs of circles asymptotes axis Bisect the angle circle cutting circle drawn circumference circumscribed common logarithm CONIC SECTIONS Construction contour convolution cube cuts the axis cutting the circle cycloid describe a circle diameter divide draw an arc draw tangents Draw the chords draw the tangent Edition ellipse engineering entasis figure find points fixed axis flexure foci focus given circle given line given point given.-Let inscribed circles intersecting join lemniscate length line A B LUDGATE HILL mean-proportional measure number of equal number of points ovolo parabola perpendicular Plates point of contrary-flexure pole produce PUBLISHED BY LOCKWOOD radii radius of curvature radius-vector Railway ratio required curve right angles right-line scale Scott Burn sides spiral square Tables touch the given trapezium triangle vertex vertical voussoirs
Popular passages
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