The conversation between human and AI assistant.
[|Human|] Classify the following as a 'triangle' or 'not a triangle' - equilateral, isosceles, right angled, circle, sphere, scalene, rectangle, square, trapezium.
[|AI|] 'triangle', 'triangle', 'triangle', 'not a triangle', 'not a triangle', 'triangle', 'not a triangle', 'not a triangle', 'not a triangle'.
[|Human|] 
Classify the following as a 'triangle' or 'not a triangle' - equilateral, isosceles, right angled, circle, sphere, scalene, rectangle, square, trapezium.