warm up how many corners does the tissue box have? how many flat surfaces? how many folded creases?...
TRANSCRIPT
Warm UpHow many corners does the tissue box have? How many flat surfaces? How many folded creases?Draw a net for the tissue box.
Corners: 8Flat Surfaces: 6Creases: 12
Space Figures and Cross Sections
Objectives:• To recognize polyhedrons and their parts.• To visualize cross sections of space figures.
Vocabulary^
• Why do we study the parts of a ployhedron?We can analyze a three-dimensional figure by using the relationship among its vertices, edges, and faces.
polyhedron
Problem1~
Euler’s Formula
Using Euler’s Formula
12
30
Practice*
Cross Section~
Practice*
Drawing a Cross Section
Practice*
Homework
• P692: 6, 8, 9, 11, 12, 14, 18-23