Question

altitude

Accepted Answer

elevation especially above sea level or above the earth's surface; angular distance above the horizon (especially of a celestial object); the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)

Front	altitude
Back	elevation especially above sea level or above the earth's surface; angular distance above the horizon (especially of a celestial object); the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)

Distance Altitude Elevation Sea Level Earth's Surface Angular