Why Lines with Negative Reciprocal Slopes are Perpendicular
- Author:
- cjadams
- Topic:
- Algebra, Geometry, Straight Lines, Rhombus
Through adjusting the sliders for a and b, you can see how the slope changes continues to produce Rhombus ABCD. This means that the lines are the diagonals of the rhombus, which means they have to be perpendicular.