SOLID GEOMETRY

SOLID GEOMETRY

By

MABEL SYKES

Instructor in Mathematics, Bowen High School, Chicago
Author of "A Source Book of Problems for Geometry"
and (with Clarence E. Comstock) of "Plane Geometry"

and

CLARENCE E. COMSTOCK

Professor of Mathematics, Bradley Polytechnic Institute
Author (with Mabel Sykes) of "Beginners' Algebra❞

RAND MCNALLY & COMPANY

CHICAGO

NEW YORK

Copyright, 1922, by

RAND MCNALLY & COMPANY

59

CHAPTER II. Properties of Polyhedrons, Cylinders, and Cones