the smallest angle of incidence for which light is totally reflected
marked by a tendency to find and call attention to errors and flaws
characterized by careful evaluation and judgment
at or of a point at which a property or phenomenon suffers an abrupt change especially having enough mass to sustain a chain reaction
urgently needed; absolutely necessary
forming or having the nature of a turning point or crisis
the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
move or proceed at an angle
a biased way of looking at or presenting something
