The line segment that connects two nonconsecutive vertices in a polygon is called a

A line segment joining two adjacent vertices of a polygon is called an edge.

Rounding decimals is very similar to rounding other numbers. if the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. for example, rounding 0.843 to the nearest tenth would give 0.8. , your welcome !