Answer:
Step-by-step explanation:
This is because the degree measures are 90, 90-d, 90-2d, 90-3d, 90-4d,90-5d.
6(90)-(1+2+3+4+5)d
= 540-15d
There are 360 degrees in a pizza.
540-15d=360
Then, subtract 360 from each side
180-15d=0
Add 15d to each side.
180=15d
d=12
then you get 90,78,66,54, 42, and 30.
SO the 5th slice measures 42 degrees!