An angle of 45^circ can be constructed with compass and ruler by:

  1. bisecting a 60^circ angle
  2. trisecting a 180^circ angle
  3. bisecting a 90^circ angle
  4. only with a protractor
Answer

C) bisecting a 90^circ angle

Construct a right angle, then bisect it. SLO M-09-B-28 · Knowledge

Mathematics MCQ · More Construction of Triangles MCQs · Practise