Elementary geometrical drawing, Part 1 |
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Common terms and phrases
applied archines base bisect centre circle cutting construct a scale containing cutting M N describe a circle describe two circles determined diagonal scale Divide a line draw drawn English yards equal equivalent evident example feet figure French GEOMETRY given line given point given straight line greater horizontal inches long intersecting Join length less Let A B Let M N Pl line M N line of chords line of lines marked means measured meets method middle miglios miles parallel pencil perpendicular to M N polygon PRACTICAL primary division principle PROBLEM proportional PROTRACTOR radii radius ratio reduce regular representative fraction required Euc respectively right angle ruler secondary divisions sector segment setting shown sides similar square Subdivide taken toises touch transverse distance triangle unit vertical
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.