Geometric Art: Isolines or Contour Lines of Problem 1149, Isosceles Triangle, Altitude,
Circle, Tangent, Parallel Lines
Isoline
An isoline or contour line of a function of two variables
is a curve along which the function has a constant value. Isolines usually have a parallel trend.
Parallel lines are lines in a plane which do not intersect or touch each other at any point.
See
also:
Original problem 1149
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