An isosceles triangle definitely has three axes of symmetry
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0An equilateral triangle has 3An isoceles triangle has 1All other triangles have 0
a rectangle has 2 axes of symmetry
It has 5 axes of symmetry
Well since isosceles can only have two equal angles and two equal sides and a triangle has 3 angles and 3 sides it can really only have 1 line of symmetry.
A polygon need not have any axes of symmetry. It can have at most n axes where n is the number of sides that the polygon has.