Solve for the missing variables. (geometry)

True or false? a triangle can be circumscribed about a given circle

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

What numbers are included in the set of integers? what numbers are not included?