None.
If it is a right circular cone, it has an infinite number of planes of symmetry. If it is an oblique circular cone, it has one plane of symmetry.
There are infinitely many axes of symmetry in mathematics.
A regular pentagon has five axes of symmetry.
2 axes from angles to angles
4
If it is a right circular cone, it has an infinite number of planes of symmetry. If it is an oblique circular cone, it has one plane of symmetry.
There are infinitely many axes of symmetry in mathematics.
a rectangle has 2 axes of symmetry
A square has 4 axes of symmetry.
It has 5 axes of symmetry
A regular pentagon has five axes of symmetry.
A right circular cone has one axis of rotational symmetry, which is the vertical line that runs through its apex and the center of its base. This axis allows the cone to be rotated around it without changing its appearance. Any rotation about this axis results in the same shape, while other axes do not maintain the cone's symmetry.
An isosceles triangle definitely has three axes of symmetry
Not sure about a duodecagon, but a regular dodecagon has 12 axes 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.
2 axes from angles to angles
a tetrahedron has 7 axis of symmetry