4.Classroom activity Contracting the squarespiral')! Take a large sheet of paper and const Pthe square root spiral in the following f owith a point and draw a line ment OP of unitlength Drawing sement PP perpendiculareOP of unit length (see Fig. 19. Now draadsegment P.P. perpendiculario OP ThendralineFsegment PP perpendicular to OP Continuingthis manner, you can get the line segment P P.bydrawing a line segment of unit length perpendicular to OPhave created the points PP P and joined themCIn the

4.Classroom activity Contracting the squarespiral')! Take a large shee

1.	4.Classroom activity Contracting the squarespiral')! Take a large sheet of paper and const Pthe square root spiral in the following f owith a point and draw a line ment OP of unitlength Drawing sement PP perpendiculareOP of unit length (see Fig. 19. Now draadsegment P.P. perpendiculario OP ThendralineFsegment PP perpendicular to OP Continuingthis manner, you can get the line segment P P.bydrawing a line segment of unit length perpendicular to OPhave created the points PP P and joined themCIn the
Answer» convex lens the first local point