Involutes, ContinuedInvolute of atriangleTo draw an involute of a triangle, use this table:StepAction1Given triangle ABC, extend the sides of the triangle to anyconvenient length.2Using CA as a radius and C as a center, strike arc AD terminatingat the intersection of the extension BD.3With BD as a radius and B as a center, strike arc DE.4With AE as a radius and A as a center , strike arc EF.5Repeat this procedure until you reach a figure of the desired size.Figure 2-53 is an example of an involute of a triangle.Figure 2-53.—The involute of a triangle.Continued on next page2-55
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