Introduction to Geometry: Basic Elements of Geometry

think icon Think & Click: Points, Lines, and Line Segments

Now, you try. Complete the Think & Click activity by looking at the problem below, thinking about it, and then clicking on the question to reveal the solution.

Identify all points, lines, and line segments in the figure below.

points N, Q and P, in that order, with a line through all three, extending beyond the end points, with arrows on each end, point L is above this line and two more lines are drawn, one through L and N, another through L and P
 

Points: L, N, Q, P

Lines: line L P, line N P (could also be line N Q or line Q P), line N L
Line Segments: line segments: N L, L P, N P, N Q, Q P