Elementary geometrical drawing, Part 1 |
Other editions - View all
Common terms and phrases
ABCDEF archines bisect centre circle cutting M N construct a scale cutting M N describe a circle describe two circles diagonal scale distance at 9 Divide a line divide a straight Draw P Q English yards equal to A B figure A B C D E F G furlongs given angle given distance given line given point given straight line hair dividers heptagon horizontal inches long isosceles triangle length of scale Let A B Pl Let M N Pl Let the scale line of chords line of lines M N Euc MARQUOIS SCALES mètre miglios number of degrees number of inches P Q equal parallel to Q R perpendicular to M N PROBLEM PROTRACTOR radii rectilineal figure regular nonagon regular polygon representative fraction right angle ruler scale of English secondary divisions similar triangles straight line M N Subdivide thirteen equal toises transverse distance versts
Popular passages
Page 11 - To describe a parallelogram equal to a given triangle, and having an angle equal to a given angle.
Page 8 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Page 18 - Tojind a fourth proportional to three given straight lines. Let A, B, C be the three given straight lines. It is required to find a fourth proportional to A, B, C. Take two straight lines DE, DF, containing any angle EDF: and upon these make DG equal to A, GE equal to B, and DH equal to C
Page 4 - Through a given point, to draw a straight line parallel to a given straight line. See Fig. 36; also 4 of Plate I. CONSTRUCTION. — Let P be the given point, and AB the given straight line 3|
Page 3 - At a given point in a straight line to make an angle equal to a given angle. Let A be the given point in the line AB, and C the given angle.
Page 4 - In equal circles, the angles which stand upon equal circumferences are equal to one another, whether they be at the centres or circumferences. Let...
Page 8 - To draw a circle passing through three given points not in the same straight line ; in other words, To find a point equidistant from three given points.
Page 20 - The number of degrees in an angle of a regular polygon of n sides is — - 180°.
Page 17 - To divide a straight line into any number of equal parts. Let AB (Fig.