An equilateral triangle.
An Isoceles triangle has two equal sides and two equal angles (though all triangles have three angles)
An irregular pentagon.
A shape with six sides is a hexagon. A hexagon with all sides and angles equal is a regular hexagon.
An irregular quadrilateral.
There is no such shape. A 2d shape with 5 sides and all equal angles must be a regular pentagon (or a 5-pointed star if you stretch the definition of "all angles"). And a regular pentagon - or star - has 5 lines of symmetry.
An equilateral triangle.
An Isoceles triangle has two equal sides and two equal angles (though all triangles have three angles)
An isosceles triangle would fit the given description
rhombus
equilateral square or triangle
Squares
a irregular polygon and rhombus
A scalene triangle is one example.
Squares
An irregular pentagon.
A shape with six sides is a hexagon. A hexagon with all sides and angles equal is a regular hexagon.
Well its still a 2d because its like a normal square