2012 · Q59
Consider the following statements in respect of an equilateral triangle ABC.
- 1There is a point P inside the triangle ABC such that each of its sides subtends an angle of 120 degrees at P.
- 2There is a point P inside the triangle ABC such that the triangle PBC is obtuse angled and A is the orthocentre of triangle PBC.
Which of the above statements is/are correct?
Elementary MathematicsGeometry
- A1 only
- B2 only
- CBoth 1 and 2
- DNeither 1 nor 2
Explanation
The centre (Fermat point) subtends 120 degrees at each side, and for P at the centre, triangle PBC is obtuse with A as its orthocentre by symmetry.