0.00045−2.5⋅10 −5 = what is the answer i been up all day

Statement: if two points are given, then exactly one line can be drawn through those two points. which geometry term does the statement represent? defined term postulate theorem undefined term

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters