In an equilateral triangle, the incentre, circumcentre, centroid and orthocentre:

  1. form a square
  2. lie on one side
  3. are all different
  4. all coincide
Answer

D) all coincide

Every median is also an altitude, an angle bisector and a perpendicular bisector. SLO M-09-B-31 · Understanding

Mathematics MCQ · More Construction of Triangles MCQs · Practise