Practical geometry for the architect, engineer, surveyor and mechanic |
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Page vii
... perpendicular 1 2. To divide a right - line of given length into two or more equal parts · 2 3. From a given point in a given right - line to erect a perpendi- cular 3 4. To draw a perpendicular to a given right - line from a given ...
... perpendicular 1 2. To divide a right - line of given length into two or more equal parts · 2 3. From a given point in a given right - line to erect a perpendi- cular 3 4. To draw a perpendicular to a given right - line from a given ...
Page xii
... perpendicular to the tangent at any given point on an ellipse • • 111. To draw tangents to an ellipse from any given point outside of it 112. About a given ellipse to circumscribe a trapezium of which two opposite vertices are given 113 ...
... perpendicular to the tangent at any given point on an ellipse • • 111. To draw tangents to an ellipse from any given point outside of it 112. About a given ellipse to circumscribe a trapezium of which two opposite vertices are given 113 ...
Page 2
... perpendicular OD is set up so as to make the angle A OD equal to the angle EOD , then each of these angles is called a right angle . The angle A OB , which is less than a right angle is called an acute angle , and the angle A O C ...
... perpendicular OD is set up so as to make the angle A OD equal to the angle EOD , then each of these angles is called a right angle . The angle A OB , which is less than a right angle is called an acute angle , and the angle A O C ...
Page 3
... perpendicular . - Let C ( fig . 2 ) be the given point in the given line AB . From C as a centre and with any radius CA describe a circle cutting the line in A and B. From A and B as centres , and with any radius AF greater than A C ...
... perpendicular . - Let C ( fig . 2 ) be the given point in the given line AB . From C as a centre and with any radius CA describe a circle cutting the line in A and B. From A and B as centres , and with any radius AF greater than A C ...
Page 4
... 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 . - Let A B ( fig . 5 ) be the given line , C the given point . Join A C. From A and C as centres , and with AC for radius ...
... 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 . - Let A B ( fig . 5 ) be the given line , C the given point . Join A C. From A and C as centres , and with AC for radius ...
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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
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