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Home > CCA > Chapter 5 > Lesson 5.1.1 > Problem 5-17


The dartboard shown at right is in the shape of an equilateral triangle. It has a smaller equilateral triangle in the center, which was made by joining the midpoints of the three edges. If a dart hits the board at random, what is the probability that: Homework Help ✎

triangles in a triangle

  1. The dart hits the center triangle?

    How many smaller triangles make up the bigger triangle?

  2. The dart misses the center triangle but hits the board?

  • How many smaller triangles can be hit if the center one is missed?