Geometry 4.7 Tree Rings.

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Presentation transcript:

Geometry 4.7 Tree Rings

4.7 Cross Sections Objectives Determine the shapes of cross sections Determine the shapes of intersections of solids and planes

Problem 1: Cutting a Tree Trunk Collaborate 1-4 (6 Minutes)

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk Together #5 Cross Section Square Cross Section Triangle Cross Section Rectangle Cross Section Hexagon Cross Section Pentagon

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk Collaborate 6-8 (4 Minutes) Each group will only discuss one of the cross section problems We will discuss all problems as a group

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk

Problem 1: Cutting a Tree Trunk Together #9

Problem 1: Cutting a Tree Trunk Together #9

Problem 1: Cutting a Tree Trunk Together #9

Check for Understanding Which of the following are not possible cross sections of a cube? Be able to explain why, when not possible. Hexagon Octagon Rectangle Equilateral Triangle Circle Possible Not Possible Possible Possible Not Possible

Check for Understanding Which of the following are not possible cross sections of a cube? Be able to explain why, when not possible. Triangle that is not equilateral Pentagon Parallelogram that is not a rectangle Rectangle that is not a square Square Possible Possible Possible Possible Possible

Formative Assessment Skills Practice 4.7 Pg. 453-461 (1-30)