# Go Figure! Using Math to Answer Everyday Imponderables by Clint Brookhart

By Clint Brookhart

Pass determine. is an interesting and numerous selection of maths-related anecdotes, puzzles and formulation. It exhibits readers all of the fascinating issues they could work out utilizing easy algebra.'

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Extra resources for Go Figure! Using Math to Answer Everyday Imponderables

Example text

59, and n = 1994 – 1928 = 66 years. 12% The price of gasoline has not risen as much as we might have guessed. The average inflation rate of all goods and services was about 4% over those 66 years. 26 per gallon. Something for Everyone The Making of a Star Doing It the Old-Fashioned Way In the old days, before protractors were available to measure angles, only a compass and a straightedge were used to make geometric constructions. Here we shall draft a five-point star with only these instruments.

Connect R and S. This — line is the bisector of OB. — Step 2. Place the compass point at A (the midpoint of OB) and set the radius for the length AC. Draw arcs at C and D. Step 3. Set the radius of the compass for the length CD. Place the compass point at C and mark off point E on the circle. Proceeding around the circle (see Figure 2), mark off points F, G, and H. Step 4. Draw the five-point star by connecting points as shown in Figure 2. Now Prove It! Do the five points of your star truly and accurately divide the 360 degrees of the circle into five equal arcs?

12% The price of gasoline has not risen as much as we might have guessed. The average inflation rate of all goods and services was about 4% over those 66 years. 26 per gallon. Something for Everyone The Making of a Star Doing It the Old-Fashioned Way In the old days, before protractors were available to measure angles, only a compass and a straightedge were used to make geometric constructions. Here we shall draft a five-point star with only these instruments. — Step 1. Bisect the radius OB (see Figure 1).