How does the sum of the sides determine if a shape is a triangle?(In other words, when is a shape with 3 sides not a triangle?)

The product of two negative rational numbers is always zero sometimes zero never zero

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

What rotation was applied to triangle def to create d’e’f’?