Engineering Board Exam Reviewer · Triangles · medium

In a triangle with sides 8, 12 and 10, the bisector of the angle between the sides 8 and 12 meets the opposite side. Find the length of the shorter segment it cuts on the side of length 10.

  1. 4
  2. 6
  3. 5
  4. 3.33

Answer

A. 4

Solution

By the angle bisector theorem the segments are proportional to 8:12. They are 10·8/20=4 and 10·12/20=6. The shorter is 4.

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