Welchons A.M., Krickenberger W.R., Pearson H.R. Plane Geometry

Ginn, 1961. — 584 p.This new textbook in plane geometry is the work of successful and experienced teachers, A. M. Welchons and W. R. Krickenberger, both of the Mathematics Department of the Arsenal Technical High School of Indianapolis. In it the authors have combined the best modern tendencies in the teaching of geometry with the best traditional methods.