The base and the perpendicular height are at right angles to each other. The measurements used must be in the same units. For example, to work in cm a 45 mm measurement would have to be converted to ...
The Mathematical Gazette, Vol. 103, No. 558 (November 2019), pp. 471-479 (9 pages) A. Gutierrez, Problem 144: Four triangles, incircle, tangent and parallel to side ...