A triangle is constructed with two sides 5 cm and 12 cm and an included angle of 90^circ. When measured, the third side should be:

  1. 14 cm
  2. 7 cm
  3. 13 cm
  4. 17 cm
Answer

C) 13 cm

By Pythagoras the third side is 5^2 + 12^2 = 13 cm — a useful check on the accuracy of the construction. SLO M-09-B-28 · Knowledge

Mathematics MCQ · More Construction of Triangles MCQs · Practise