A surface is bounded by a line A line is bounded by points. The intersection of two lines is If a line is extended, its parts w direction, and if it is extended A straight line may be supposed direction, and to any distance. If a line that is not straight betw of the line will be drawn beyo der will extend from one to th the shortest line that can be di To continue a straight line in th producing the line. X To draw a straight line from on joining the points. х Two magnitudes, which being co may be said to coincide. If one straight line is applied to a far as one extends beyond the will still coincide. If a straight line be drawn betw line between the same points v X Two straight lines, in different dire said to make an angle. XX An angle may be named by a lett letters distinguishing the lines |