Question

brian cut an extra large round pizza into 12 pieces. Seven of the pieces were eaten. What angle measure of pizza is left?

Answer 1

a right angle try to draw a diagram hope this helped;)

Answer 2

if seven pieces were eaten then they ate more than half, so i would say an obtuse angle is left.
if you need exact degrees i would say about maybe 210 degrees out of 360 which is from the circle of the pizza
otherwise hope this helps :)