___________ is a curved-triangular space formed between the outer curve of an arch and a horizontal line through the crown.
A. Spandril
B. Skewback
C. Intrados
D. Extrados
Answer:A
___________ is a curved-triangular space formed between the outer curve of an arch and a horizontal line through the crown.
A. Spandril B. Skewback C. Intrados D. Extrados