Explore how planes shape our understanding of space and geometry.
This revised edition presents core ideas of plane and solid geometry with clear explanations and guided steps that connect plane results to solid geometry.
The text builds from basic definitions to important theorems, showing how a plane is defined, how two planes intersect, and how lines relate to planes. It emphasizes that many plane results extend to solid geometry, while also introducing key concepts like the foot of a line, perpendicular to a plane, and the idea that a plane can have many positions around a line.
- Learn how a plane is determined by lines or points and how to prove that a given set determines a plane.
- Discover why the intersection of two planes is a straight line and how perpendiculars to a plane are defined and tested.
- See how to apply core postulates and propositions to problems about lines, planes, and their relationships.
- Practice with guided exercises that reinforce the connections between plane geometry and solid geometry.
Ideal for students building a solid foundation in geometry, this edition supports independent study, classroom review, and quick reference during homework or test prep.