A pointed arch which forms isosceles or equilateral triangle, is generally known as
A. Three centered arch
B. Two centered arch
C. Lancet arch
D. Bull's eye arch
Answer: Option C
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Lancet Arch: A narrow, pointed arch whose radii are greater than its span, forming the shape of an isosceles or equilateral triangle at its apex. It is highly characteristic of Gothic architecture.
Three-centered arch: A broad, flattened arch drawn from three different center points (often used for wider openings like bridges).
Two-centered arch: A general category of pointed arches struck from two centers (a lancet arch is a specific subtype).
Bull's eye arch: A fully circular or oval window/arch, not a pointed one.