The angle between skew back of a flat arch and the horizontal, is kept approximately equal to (A) 0° (B) 30° (C) 60° (D) 90

The angle between skew back of a flat arch and the horizontal, is kept approximately equal to
(A) 0°
(B) 30°
(C) 60°
(D) 90
by

1 Answer

Answer :

Answer: Option C
by

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