Polygonal Constructin, ContinuedAngles(Continued)CHORD METHOD: The chord method of angle construction refers to thejoining of two points on a curve by a line. Draw line x at any length anddraw an arc at any radius, again let R= 10. Find chordal length C in thetable of chords and multiply the value by 10. If a table is not available,calculate chordal value with the formula C = 2 sin /2.Figure 2-36 is an angle drawn by the chord method.Figure 2-36.—The chord method of angle construction.Continued on next page2-37
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