An arch carries the thrust of weight to its _____(1)______. With a _____(2)______, the horizontal part of the structure supports
all the weight above it. a.
(1) center; (2) post-and-bearing
b.
(1) base; (2) springing line
c.
(1) keystone; (2) groin vault
d.
(1) sides; (2) post-and-lintel
An arch carries the thrust of weight to its _____(1)______. With a _____(2)______, the horizontal part of the structure supports all the weight above it.