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JAMB Mathematics 1990 Question 45

Question 45

Loci

The locus of a point which moves so that it is equidistant from two intersecting straight lines is the

  1. A.perpendicular bisector of the two lines
  2. B.angle bisector of the two lines
  3. C.bisector of the two lines
  4. D.line parallel to the two lines
Show the answer and explanation

Answer: B (angle bisector of the two lines)

Explanation

Points the same distance from two crossing lines lie on the lines that bisect the angles between them.