The triangle with vertices (1, 1), (4, 1) and (1, 5) is right-angled at:

  1. no vertex
  2. (1, 1)
  3. (1, 5)
  4. (4, 1)
Answer

B) (1, 1)

From (1, 1) one side is horizontal and the other vertical. SLO M-09-B-12 · Knowledge

Mathematics MCQ · More Angle Between Lines MCQs · Practise