Polygonal Constructin, Continued
Angles
(Continued)
CHORD METHOD: The chord method of angle construction refers to the
joining of two points on a curve by a line. Draw line x at any length and
draw an arc at any radius, again let R= 10. Find chordal length C in the
table 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 page
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