The rise of a parabolic arch at quarter points, is equal to – McqOptions

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1.	The rise of a parabolic arch at quarter points, is equal to
A.	1/3 times the rise of the crown
B.	1/4 times the rise of the crown
C.	1/2 times the rise of the crown
D.	3/4 times the rise of the crown
Answer» E.

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