Assertion: parabola's shape | /r/HasProperty | catenary
Facets:
Source sentences:
text: When an arch carries only its own weight, the best shape is a catenary.
text: An arch shape that is often used is the catenary.
text: As it turns out, the shape of the cable of a completed suspension bridge is a parabola, although before the road is in place, it has a different shape, known as a catenary.