PLANE GEOMETRY

BY

ARTHUR SCHULTZE, PH.D.

ASSISTANT PROFESSOR OF MATHEMATICS, NEW YORK UNIVERSITY
HEAD OF THE DEPARTMENT OF MATHEMATICS, HIGH

SCHOOL OF COMMERCE, NEW YORK

AND

F. L. SEVENOAK, A.M., M.D.

PRINCIPAL OF THE ACADEMIC DEPARTMENT STEVENS INSTITUTE
OF TECHNOLOGY

New York

THE MACMILLAN COMPANY

LONDON: MACMILLAN & CO., LTD.

1911

All rights reserved

September, 1902; August, September, 1903; August, 1904;

September, November, 1905; January, February, November, 1906;
July, September, 1907; February, 1908; August, 1909; August,
1910; January, August, 1911.