A triangle is constructed with two sides 8 cm and 15 cm and an included angle of 90^circ. When measured, the third side should be:

  1. 18 cm
  2. 23 cm
  3. 7 cm
  4. 17 cm
Answer

D) 17 cm

By Pythagoras the third side is 8^2 + 15^2 = 17 cm — a useful check on the accuracy of the construction. SLO M-09-B-28 · Knowledge

Mathematics MCQ · More Construction of Triangles MCQs · Practise