The triangle A(0, 0), B(4, 0), C(0, 4) has which angles?

  1. 60^circ, 60^circ, 60^circ
  2. 90^circ, 60^circ, 30^circ
  3. 120^circ, 30^circ, 30^circ
  4. 90^circ, 45^circ, 45^circ
Answer

D) 90^circ, 45^circ, 45^circ

AB is horizontal and AC vertical, so angle A = 90^circ; BC has slope -1, giving 45^circ at B and C. SLO M-09-B-12 · Knowledge

Mathematics MCQ · More Angle Between Lines MCQs · Practise