All triangles are polygons. isosceles triangles have exactly 2 sides of equal length which statement is true based on these facts 1.If a triangle does not have two equal sides it’s not a polygon
2.All polygons are triangles with at least two sides of equal length
3. All polygons with two sides of equal length or isosceles triangles
4. If polygon does not have two equal sides it is not an isosceles triangle