\overleftrightarrow{AB} AB
A, B, with, \overleftrightarrow, on top and \overleftrightarrow{CD}
CD
C, D, with, \overleftrightarrow, on top are parallel lines. OOO is the midpoint of segment BCBCB, C.

What theorem can we prove by rotating the plane 180\degree180°180, degree about point OOO?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212