Practical geometry for the architect, engineer, surveyor and mechanic |
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Page 3
... circle cutting the line in A and B. From A and B as centres , and with any radius AF greater than A C , describe circles cutting each other in the points D and E ; then the right line DCE will be perpendicular or at right angles to A B ...
... circle cutting the line in A and B. From A and B as centres , and with any radius AF greater than A C , describe circles cutting each other in the points D and E ; then the right line DCE will be perpendicular or at right angles to A B ...
Page 4
... circle cutting the given line in the points A and B ; join AC , BC . From A and B as centres , with A C as radius , describe circles intersect- ing in C and D ; draw CD cutting A B in the point H , then the line CHD is perpen- dicular ...
... circle cutting the given line in the points A and B ; join AC , BC . From A and B as centres , with A C as radius , describe circles intersect- ing in C and D ; draw CD cutting A B in the point H , then the line CHD is perpen- dicular ...
Page 5
... circle cutting AB and AC in B and C ; join BC . Draw any right line DE , and from D as a centre , with a radius equal to A B , describe a circle cutting DE in the point E. From E as a centre , with a radius equal to BC , describe an arc ...
... circle cutting AB and AC in B and C ; join BC . Draw any right line DE , and from D as a centre , with a radius equal to A B , describe a circle cutting DE in the point E. From E as a centre , with a radius equal to BC , describe an arc ...
Page 6
... circle ; and from A and B as centres , with the same radius , draw arcs , cutting the circle in the points C and D. Join CO and DO ; then the angles AOC , COD , DOB are all equal . 0 B Also , since we can bisect each of the angles AOC ...
... circle ; and from A and B as centres , with the same radius , draw arcs , cutting the circle in the points C and D. Join CO and DO ; then the angles AOC , COD , DOB are all equal . 0 B Also , since we can bisect each of the angles AOC ...
Page 7
... circle , and from B as a centre , with AC for radius , draw an arc cutting the circle in D. Join DA , then the Fig . 10 . B angle DAB is one - fifth of two right angles , or two - fifths of one right angle ; bisect the angle D A B ( 8 ) ...
... circle , and from B as a centre , with AC for radius , draw an arc cutting the circle in D. Join DA , then the Fig . 10 . B angle DAB is one - fifth of two right angles , or two - fifths of one right angle ; bisect the angle D A B ( 8 ) ...
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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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