HKIMO 2017 Grade 5 National Final (Heat) Set 04 Question 21

Amy draws all triangles with perimeter 17 cm and integer side lengths. How many different triangle types can she draw? Triangles with side lists (5, 5, 6) and (5, 6, 5) are regarded as the same type.

Source glossary (English–Vietnamese): Triangles: tam giác; Perimeter: chu vi; Length: độ dài; Sides: cạnh; Integers: số nguyên.