Tangency, ContinuedTo draw a lineTo draw a tangent to a circle through a point. follow this table:tangent to acircle through apointStepAction1Given a circle with the intended point of tangency at P, move atriangle to a position where one side passes through the center ofthe circle and point P.2Slide the triangle across the straightedge until the opposite side ofthe triangle touches the circumference at P.If P is outside of the circle, place the triangle with one straight sidepassing from P to the circumference of the circle. Move thetriangle over so that the opposing straight side passes through thecenter of the circle and intersects the circumference of the circle.Mark this T for point of tangency. Return the triangle to the firstposition.2Draw the required tangent.Figure 2-27 shows the process for drawing a line tangent to a circle through agiven point.Figure 2-27.—A line tangent to acircle.Continued on next page2-28

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