Step 1 Start with a circle with a center O and a point on the circle P. Step 2 Using a straight edge draw a line that starts at O and goes through P. Step 3 Put your compass on P and draw two points, Q and R, on the line OP. These points should be the same distance from P. Step 4 Measure out the distance from Q to R. Step 5 Draw the point S by creating two arcs from points Q and R. Use the distance measured in Step 4. Step 6 Draw the tangent line PS