function tf = isIsoceles(a, b, c)
%ISISOCELES Is a triangle an isoceles triangle?
%   tf = isIsoceles(a, b, c) returns true if the triangle
%   with side lengths a, b, and c is strictly an
%   isocelese triangle (exactly two sides have equal
%   length) and false otherwise.

tf = false;
if a == b && a ~= c
    tf = true;
elseif a == c && a ~= b
    tf = true;
elseif b == c && b ~= a
    tf = true;
end
