Question

Jocelyn cut a round gelatin into equal 12 pieces. Ten pieces were eaten. What is the angle measure of the gelatin that was left?

Answer 1

we get that there are 2 out 12 pieces left. So we get that

$\frac{2}{12}\cdot360=\frac{1}{6}\cdot360=60$

so the angle that was left is 60°