1. Quick Start Expectations 1.Fill in planner and HWRS HW: p. 39, #13, 25-26, 28 2.Get a signature on HWRS 3.On desk: journal, HWRS, pencil, pen 4.Warm Up: next slide… back of HWRS

2. Warm Up Kleenex Box - Surface Area = 2 (107.5 + 225.75 + 52.5) = 771.5 sq. cm Volume = 21.5 x 10.5 x 5 = 1,128.75 cubic cm L = 21.5 cm H = 5 cm W = 10.5 cm What happens to SA & V if you apply a scale factor of 0.5? Or 1.5? f 3 f 2 SA = V =

3. Review of Rectangular Prisms Where is a vertex? Where is an edge? Where is a face? Vertex Edge Face

4. Review of Rectangular Prisms Why is it called a rectangular prism? – The base of the prism is in the shape of a rectangle. Prisms are named by their base. How many faces does a rectangular prism have? – 6 faces How many vertices does a rectangular prism have? – 8 vertices How many edges does a rectangular prism have? – 12 edges

5. Euler’s Formula is expressed in a variety of ways. One is … E = V + F - 2

11. 2 rect. prisms 2 trapezoidal prisms All have: 8 V 12 E 6 F