Download a PDF of the Bill of Rights. The first 10 amendments to the Constitution make up the Bill of Rights. Written by James Madison in response to calls from several states for greater constitutional protection for individual liberties, the Bill of Rights lists specific prohibitions on governmental power.
When two lines are perpendicular, the slope of one is the negative reciprocal of the other. If the slope of one line is m, the slope of the other is. Try this Drag points C or D. Note the slopes when the lines are at right angles to each other.
More Geometry Lessons. Parallel and Skew Lines. Parallel lines are two lines in the same plane that never intersect. In a coordinate plane, parallel lines can be identified as having equivalent slopes. Parallel lines are traditionally marked in diagrams using a corresponding number of chevrons (or arrows).