1) Mario's company makes unusually shaped imitation gemstones one gemstone had 12 faces and 20 edges how many vertices did the gemstone have? a. 34
b. 10
c. 30
d. 8

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

What is the difference between regular convex and concave polygons

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.