Semicircle
One half of a circle.
- Every chord that passes through the centre of a circle divides the circle into two semicircles.
- The term "semicircle" is the synonym of "hemicycle."
Formula
The formula to calculate the perimeter P of a semicircle is: [latex]P = πr[/latex], where r is the radius of the circle.
Example
In simple terms, a semicircle is a construction that has the shape of one half of a circle, such as a theatre or a basilica. This shape was used in some parliaments to promote cooperation among political groups, particularly in democratic systems.