Yes. Actually, a circle has an infinite number of lines of symmetry.
9 reflection
Area of any circle = pi*radius2
The circumference of any circle is (pi) x (the circle's diameter).
a chord of the circle
One! I think...
A tetrahedron need not have any symmetry.
Parallelograms: 2-fold Square: 4-fold n-fold symmetries refer to rotational symmetries. Consequently, any symmetries about axes that these and other quadrilaterals may have are not relevant to this question.
None, however the semicircle has one folding axis of symmetry perpendicular to the midpoint of the straight side
The singular form of the plural noun symmetries is symmetry.
Fearful Symmetries - novel - was created in 1999.
yes, in fact it can have 6 rotational symmetries.
Fearful Symmetries - 2016 was released on: USA: 2016
Infinity Actually, The group of symmetries of a circle has elements of every finite order, as well as elements of infinite order. Each rotation of degree 360 / n , for some natural number n has an order of n.
Yes
A quarter of a circle has one rotational symmetry. Specifically, it can be rotated by 90 degrees to map onto itself. This means the only symmetry that corresponds to rotation is a 90-degree turn, as other rotations would not preserve the shape of the quarter circle. Thus, it has a single rotational symmetry.
A circle, rotated through an angle measuring any real value in the interval [0, 360 degrees) or [0, 2*pi radians) and remain symmetrical. The order of symmetries is therefore the continuum, C - a number that is uncountably infinite (as opposed to countably infinite). No other 2-dimensional shape can match that. ***** The perimeter of a circle measured from the centre is the same length no matter where the measurement is taken.
It has 20