If a circle has the area A and radius r, thenA = pi * r^2
An angle in a circle who's vertex is on the circle.
That is the definition of the incenter; it is the center of the inscribed circle.
The circumference of any circle divided by its diameter is equal to pi
No. Every circle on the sphere whose center is also the center of the sphere is a great circle. If the circle's center is not also the center of the sphere, then the circle is a small circle.
it is the circle that ut the hemisphere into two part.
it is the circle that ut the hemisphere into two part.
mathematical phrase
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Altitude
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.
force/area
DDSDS
"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.
A quarter of a circle.
Property is not just a mathematical term. It means a characteristic or attribute.