Example: 1 m rise over 20 m run is exactly 5%
Follow one exact rise/run conversion to 0.05, 5%, 50‰, 1:20, and an approximate 2.862405°.
Open exampleWorked geometry
Slope examples with exact linear arithmetic
Follow one rise/run conversion and one rise-from-percent calculation through exact results and approximate angles.
Example: an 8% slope over 12 m rises exactly 0.96 m
Use rise = run × percent ÷ 100 and distinguish the exact length result from the approximate angle.
Open example