Assertion: semicircle's diameter | /r/HasProperty | d
Facets:
Source sentences:
text: A circle (black), which is measured by its circumference (C), diameter (D) in cyan, and radius (R) in red; its centre (O) is in magenta.
text: Radius (r): Diameter (d): Arc length (a): Perimeter (p): Area (A):
text: r = Diameter (d) / 2