GEOMETRY Points Lines and Planes Learning Targets I

GEOMETRY Points, Lines, and Planes

Learning Targets • I understand the basic terms, definitions, and postulates in this section. Success Criteria • I can use the basic terms and definitions to describe geometric figures. • I can use the postulates to prove facts about different parts of figures.

WHAT IS GEOMETRY • the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.

GEOMETRY • Not like algebra! • There is much more writing involved in geometry. • Be prepared to write a lot!

DEFINITIONS • • • Point Line Plane Collinear Points Coplanar Points/Lines

MORE DEFINITIONS • Space • Segment • Ray • Opposite Rays

POSTULATES • An accepted statement of fact. • Also known as an axiom • You have used some of these in algebra, you just didn’t know.

POSTULATE 1 -1 •

POSTULATE 1 -2 •

POSTULATE 1 -3 •

USING POSTULATE 1 -3 •

POSTULATE 1. 4 •

Learning Targets • I understand the basic terms, definitions, and postulates in this section. Success Criteria • I can use the basic terms and definitions to describe geometric figures. • I can use the postulates to prove facts about different parts of figures.

EXIT TICKET

ASSIGNMENT • Worksheet on 1. 2 • Signed Syllabus due Friday (Sept th 9 ) • Bring a Ruler to class