Modern geometry: its structure and function / Kenneth B. Henderson, Robert E. Pingry. Henderson, Kenneth B. Pingry, Robert E. (Robert Eldon), 1914- joint author. Robinson, George Albert, 1931- joint author. Geometry. QA453 .H5 513.5 HEG Grade 11. Accompanied by Text, teacher's ed.; and Text with partial answers. New York : McGraw-Hill, 1962. 1962. 1962 Text 561 p.: eng Big ideas and basic skills series