A circle is the set of all points in a plane that are a given distance (or a fixed distance) from another point.
Take a plane, and then pick any point on it. Then pick a distance from that point you picked and connect all the points that are that distance from your fixed point. That will describe the circumference of a circle.
Another idea is to take a plane, pick any point, and then take a compass and put the point of that instrument on that point you picked. Then set a distance on the compass and draw a circle. That circle will be that set of all points a fixed distance from the original point you picked. (A string will work as well as a compass if that string is not stretched to draw the circle.)
DDSDS
A quarter of a circle.
Property is not just a mathematical term. It means a characteristic or attribute.
It means an explanation
Probability model
mathematical phrase
Altitude
CHEESE
A semi-circle.
A circle. (or approximately a circle if you look closely the mountains and valleys that the cross section cuts through disturb the circle). a mathematical sphere will give a mathematical circle at all cross sections.
"Pi" is a number. It's the circumference of any circle divided by the diameter of the same circle. It's approximately equal to 3.1416, or to ( 22/7 ), but it can never be written exactly with digits. That's why a symbol is used to refer to it.
force/area
DDSDS
A quarter of a circle.
Property is not just a mathematical term. It means a characteristic or attribute.
It's a number sentence:)
It means an explanation