MATH 213 Final: MATH213_ALL-SECTIONS_FALL2012_0000_FINAL_EXAM_1

• School: University of Maryland
• Department: Mathematics
• Course: MATH 213
• Professor: All

Document Summary

Materials needed: protractor, compass, straightedge (id card), tracing paper (6) consider the arrangement of sun, earth, and moon shown below. Assume we are looking down on the north. Indicate clearly which portion is lit up and which is dark. Draw the normal to the mirror at r. label it clearly. R mirror: (10) in a certain tiling every vertex is surrounded by two squares, one equilateral triangle, and one additional regular polygon. For each, draw in all lines of symmetry, and indicate the (smallest) # of degrees of rotation symmetry, as applicable. (6) a walker starts at a facing b. He walks to b and turns toward c. He walks to c and turns toward a. Indicate on the diagram what angle you measure. Without referring to the measure of any individual angles, state the total amount of turning done by the walker.