the interior of a circle is called a cabret
A chord of a circle that contains the center of the circle is called the diameter.
A line segment with its endpoints on the circumference (curve) of a circle is called a chord of that circle. If it passes through the center of the circle (which it can, but does not have to do), it is called a diameter of the circle. See the links below for more information.Is called a radius.
is called the diameter.
A line from the center of a circle to any point on the circle is called a radius.
A piece of an edge of a circle is called an ARC.
Part of the circumference of a circle is an arc.
Sector
Diameter
It may be called a 90 degree section , or 1 fourths of a circle.
I always called it an arc. It is simply a section of the circle. The ends are determined by the two radii you referenced. Each of the radii start at the center of the circle and end at their intersection with the circle. The portion of the circle that lies between the ends of the two radii is an arc.
If you have the area of the piece and you know how much the piece takes up. For example if you have a piece of a circle and you know it is 1/4 if the circle then you take the area and multiply by 4.
a hemisphere
true
Piece of pizza
semicircleA half circle is called a semicircle.Half a circle is a semi-circle
It's the drawing you have if you began to draw a circle but the pencil point broke before you finished.