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Isosceles,regular polygon

isosceles triangle
isosceles triangleexactly one pair of opposite parallel sides trapezoid isosceles
exactly one pair of opposite parallel sides trapezoid isoscelesirregular triangle (isosceles) how do we know two sides are
irregular triangle (isosceles) how do we know two sides arepolygon is a closed
polygon is a closedtriangles scalene       triangles scalene isosceles
triangles scalene triangles scalene isosceles
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