Exam One Key

# Exam One Key - Exam One Solutions Math 211 Spring 2008 Part...

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Exam One Solutions Math 211 Spring 2008 Part One: Short Answer (85 Points) All problems are worth 4 points unless otherwise noted. #1. A cone is sometimes a pyramid. #2. A kite is sometimes a rhombus. #3. A right triangle is never an equilateral triangle. #4 A rhombus is always a trapezoid. #5. An right triangle is sometimes a scalene triangle. #6. True : The opposite sides of a rhombus are always parallel. #7. False : The lateral faces of a prism will always be rectangles. #8. Give the most descriptive name to the following shape: Right Hexagonal Prism

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#9. Sketch a regular octahedron. Show all hidden lines. This is one of the five regular polyhedra we studied and is also a shape from your kits. #10. Sketch an oblique cylinder with an irregular base.
#11) Sketch the net corresponding to the following polyhedron: #12) Sketch the net for a pentagonal prism. Same as #11.

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#13) Sketch the polyhedron corresponding to the following net: #14. How many reflection symmetries does a regular octagon have? 8 #15. (a) How many rotation symmetries does a regular octagon have? 8 (b) What are the degrees of rotation symmetry? 45°, 90°, 135°, 180°, 225°, 270°, 315°, 360° #16. Sketch the axes of rotation symmetry for a right prism with square bases. Carefully draw points where the axis enters and exits the shape. You might not use all diagrams. There are five. Three through the centers of opposite faces and two through the midpoints of opposite lateral edges.
A pyramid P has a volume of 75 cm 3 . If pyramid Q is created by tripling the lengths of pyramid P, what is the volume of pyramid Q? new volume = old volume x (SF)

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Exam One Key - Exam One Solutions Math 211 Spring 2008 Part...

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