there is none
symmety is a thing
Four. Two from corner to corner and two down the middle point of the vertical and horizontal sides
No.No.No.No.
A triangle
2
4 lines of symmety
The line from the center of a circle to a point on the circle is the radius.
It is the circle's center point
The radius is the distance between the center of a circle and a point on the circle
The line from the center of a circle to a point on the circle is the radius.
It is the center of the circle
The point from which the circle is drawn IS the center.