On Desk: Learning Log: Pencil Calculator Math Journal F&W Learning Log Math CC7/8 – Be Prepared On Desk: Pencil Calculator Math Journal F&W Learning Log Parent Signatures? Learning Log: HW: p. 39, #13, 25-26, 28 Pass back FW Quiz- no sig. Keep quiz.
Tasks for Today Warm up Lesson 2.3 – Slicing Prisms Begin HW?
f f What happens to SA & V if you apply a scale factor of 0.5? Or 1.5? Warm Up What happens to SA & V if you apply a scale factor of 0.5? Or 1.5? Kleenex Box - SA = 2 (107.5 + 225.75 + 52.5) SA = 771.5 sq. cm V = 21.5 x 10.5 x 5 V = 1,128.75 cubic cm Find SA & Vol.! H = 5 cm W = 10.5 cm L = 21.5 cm f 2 SA = f 3 V =
Review of Rectangular Prisms Where is a vertex? Where is an edge? Where is a face? Vertex Edge Face
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
Euler’s Formula is expressed in a variety of ways. One is … E = V + F - 2
Sketch and make predictions in your journal. Then we’ll watch this video
All have: 8 V 12 E 6 F 2 trapezoidal prisms 2 rect. prisms