Mathematics for High School, Geometry (Part 2). Commentary For Teachers. Preliminary Edition.

This is part two of a two-part manual for teachers using SMSG high school text materials. The manual contains a chapter-by-chapter commentary on the text, solutions to the problems in the text, and a collection of essays on topics related to material in the text. Chapter topics include: (1) perpendicular lines and planes in space; (2) parallel lines in a plane; (3) parallel lines in space; (4) areas of polygonal regions; (5) similarity; (6) circles and spheres; (7) loci and constructions; (8) the area of a circle and related topics; and (9) plane coordinate geometry. (MP)