The vertices of △DEF are D(1, 19), E(16, −1), and F(−8, −8). What type of triangle is △DEF?
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4 friends evenly dividing up a n - slice pizza
So each one get slices of pizza.
For example, if n = 12 slice then each friend gets 12/4 = 3 pieces. If Harris ate one slice less then he ate =3 -1 = 2 pieces.
So the general expression for slices of pizza did Harris eat is