How would you test triangle?

[nishika]

Hello. The program allows us to specify 3 sides of a triangle as input, and based on them it is necessary to determine the type of this triangle. How would you test this? Write a check list)

[shizuka]

1. What are triangles?

   • On both sides:
     Equilateral
     Isosceles, not equilateral
     Versatile

   • At the corners: if the function can return a list of features, because they do not exclude those above
     Acute (all angles less than 90)
     Rectangular (One corner 90)
     Obtuse (One angle> 90)

2. What are not?
   a + b == c (degenerate triangle with zero area)
   a + b> c