Warm Up How many corners does the tissue box have? How many flat surfaces? How many folded creases? Draw a net for the tissue box. Corners: 8 Flat Surfaces:

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Presentation transcript:

Warm Up How many corners does the tissue box have? How many flat surfaces? How many folded creases? Draw a net for the tissue box. Corners: 8 Flat Surfaces: 6 Creases: 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