Constructing the Tangent to a Circle


Constructing a Tangent to a Circle

Choose a point S. Using your protractor, draw a circle with S as the center at the desired radius.
Choose a point P on the circle boundary and draw a line through S and P. Call the line l.
Construct a normal to l through the point P. Name the normal t. This is the tangent to the circle at the point P.

Circle with tangent and normal

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