ibutes to modify the size of the visual angle, andconsequently the apparent length of the line. If the straight line is held square opposite theeye, that is, with the eye equally distant from itsextremities, the visual angle which it forms at theeye is greater than when it is planed sideways… … may be so placed, with the eye in the direction atthe line produced or continued, that the two raysof light proceeding from the extremities of theline to the eye would meet, and the visual anglelbecome nothing, as at b. The length of a line isestimated by the size of the visual angle, and theline…
Design · Decoration and ornament · Art
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