TY - BOOK AU - RICH BARNETT TI - PRINCIPLES AND PROBLEMS OF PLANE GEOMETRY: 850 SDOLVED PROBLEMS T2 - 0 U1 - 516.22 PY - 1963/// CY - NEW YORK-U.S.A. PB - SCHAUM PUBLISHING KW - CIENCIAS PURAS N1 - METHOOS-PARALLELOGRAMS/SIMILARITY-INIQUALITIES ER -