Semicircle
geometric shape From Wikipedia, the free encyclopedia
In geometry, a semicircle is a two-dimensional geometric shape that forms half of a circle. Being half of a circle's 360° (360 degrees), the arc of a semicircle always measures 180°. A triangle inscribed in a semicircle is always a right triangle.

Other websites
Wikiwand - on
Seamless Wikipedia browsing. On steroids.