It need not have any. It can have two.
3
If the central point of the straight line is placed exactly on the middle, and such central point has an axis, it will have a rotational symmetry.
Reflectional symmetry
I believe it has both. If you draw planes through the middle of opposite sides e.g. top/bottom, left side/right side, front/back, you will get three planes of (refection) symmetry. Also if you draw three lines through those same points, you will get three axes of (rotational) symmetry.
The answer is 13- for more detail:
Its extremum is on its axis of symmetry.
Rotational symmetry along one axis.
Axisymmetry is a form of symmetry around an axis - also known as rotational symmetry.
If the central point of the straight line is placed exactly on the middle, and such central point has an axis, it will have a rotational symmetry.
It can be thought of rotational symmetry along the axis
firstly we dra the one pentagonal prism in above the xy
It have 4 axis of symmetry . Two Perpendiculars and two Diagonals
Nothing. (Except if you count z axis and you get into 3D!)
Not exactly. Rotational symmetry means that a shape will look the same if the object is rotated around some axis, by ANY angle.There are no specific requirements as to where the axis must be.
Not exactly. Rotational symmetry means that a shape will look the same if the object is rotated around some axis, by ANY angle.There are no specific requirements as to where the axis must be.
It depends upon the pyramid: if it is a right rectangular pyramid it will have one axis of rotational symmetry which runs from the apex to the centre of the base and a rotational symmetry of 2. If it is not a right rectangular pyramid then there is no axis of rotation which will permit the pyramid to fit on itself before a complete rotation of 360°
Fourfold rotational. In chemistry, it would be called a C4 axis.
A two-fold symmetry has a 360 degrees rotation. A three-fold rotational symmetry, on the other hand, has 120 degrees, and on a horizontal axis, a symmetry has 180 degrees.