Note: In GeoGebra, the algebraic value of an arc is its length. The value of a sector is its area.
First, select the center point M of the circular arc. Then, select the starting point A of the arc, before you select a point B that specifies the length of the arc (also see command CircularArc).
Note: While point A always lies on the circular arc, point B does not have to lie on it.
First, select the center point M of the circular sector. Then, select the starting point A of the sector’s arc, before you select a point B that specifies the length of the sector’s arc (also see command CircularSector).
Note: While point A always lies on the sector’s arc, point B does not have to lie on it.
Selecting three points A, B, and C creates a circular arc through these points. Thereby, point A is the starting point of the arc, point B lies on the arc, and point C is the endpoint of the arc (also see command CircumcircularArc).
Selecting three points A, B, and C creates a circular sector through these points. Thereby, point A is the starting point of the sector’s arc, point B lies on the arc, and point C is the endpoint of the sector’s arc (also see command CircumcircularSector).
Select two points A and B to create a semicircle above the segment AB (also see command Semicircle).