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2001 AMC 12 Question 17

AMC12 · 2001 AMC 12

Question 17

A point $P$ is selected at random from the interior of the pentagon with vertices $A = (0, 2),$ $B = (4, 0),$ $C = (2\pi + 1, 0),$ $D = (2\pi + 1, 4),$ and $E = (0, 4).$ What is the probability that $\angle APB$ is obtuse?

Question illustration
  1. $\dfrac{1}{5}$
  2. $\dfrac{1}{4}$
  3. $\dfrac{5}{16}$
  4. $\dfrac{3}{8}$
  5. $\dfrac{1}{2}$