Practical Geometry and GraphicsLongmans, Green, 1912 - 448 páginas |
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Página 2
... position AB'C ' and draw the line AB ' . If AB ' coin- cides with AB , then the angle BAC is equal to the angle BAC ' , and therefore by the definition each is a right angle . An angle which is less than a right angle is called an acute ...
... position AB'C ' and draw the line AB ' . If AB ' coin- cides with AB , then the angle BAC is equal to the angle BAC ' , and therefore by the definition each is a right angle . An angle which is less than a right angle is called an acute ...
Página 3
... position OX and sweep out the angle A by moving round O as centre in the direction opposite to that of the hands of a watch . An angle so described is called a positive angle . If the motion takes place in the opposite direction the ...
... position OX and sweep out the angle A by moving round O as centre in the direction opposite to that of the hands of a watch . An angle so described is called a positive angle . If the motion takes place in the opposite direction the ...
Página 5
... position of the point of intersection O of two straight lines OA and OB ( Fig . 8 ) , when the error in the lateral posi- tion of one of them is x , is x sin Ꮎ where FIG . 7 . O is the angle between the lines . when 0 = 1 ° , e = 0.057 ...
... position of the point of intersection O of two straight lines OA and OB ( Fig . 8 ) , when the error in the lateral posi- tion of one of them is x , is x sin Ꮎ where FIG . 7 . O is the angle between the lines . when 0 = 1 ° , e = 0.057 ...
Página 11
... position of the decimal point . that Division . In Figs . 21 and 22 , since OA : OB :: OC : OD , it follows ОА ос Make OB = the unit , then = ос OA OD 1 = OA . Hence OB OD ' the construction for finding the quotient of one number ...
... position of the decimal point . that Division . In Figs . 21 and 22 , since OA : OB :: OC : OD , it follows ОА ос Make OB = the unit , then = ос OA OD 1 = OA . Hence OB OD ' the construction for finding the quotient of one number ...
Página 24
... positions of the point F. If the line OH produced cuts the circle again at K , then the second position of F is the middle point of HK . 27. Pole and Polar . - If through a given point P ( Figs . 63 and 64 ) any straight line be drawn ...
... positions of the point F. If the line OH produced cuts the circle again at K , then the second position of F is the middle point of HK . 27. Pole and Polar . - If through a given point P ( Figs . 63 and 64 ) any straight line be drawn ...
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Términos y frases comunes
ABCD angular points asymptotes axes bisects centre line chord conic construction crank cylinder described determined diagram distance Draw the plan Draw the traces drawn edge ellipse epicycloid epitrochoid equal equation face figure fixed forces given in Fig given plane given point ground line helix horizontal plane horizontal trace hyperbola hyperboloid hypocycloid hypotrochoid inches inches in diameter inches long inches side inclined at 45 isometric projection major axis meet parabola parallel to XY picture plane plan and elevation plane containing plane of projection plane of section plane parallel point of intersection position prism pyramid radius rays of light Referring to Fig right angles right circular cone rolling circle semi-minor axis shown in Fig shows simple harmonic motion solid sphere square straight line surface of revolution tangent plane touch tracing paper true length vector velocity vertex vertical plane vertical trace