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What is a groin vault?
a. Agroin vault is a structure that resembles the top half of a sphere.
b. Agroin vault comes from the extension of a round arch, similar to a long tube of arches.
c. Agroin vault has two barrel vaults of the same diameter which cross or intersect one another.
d. Agroin vault has two barrels which extrude into a two dimensional structure.

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Answer:

C

Explanation:

I took it :DD

A groin vault has two barrel vaults of the same diameter which cross or intersect one another.

What is a groin vault?

A groin vault is created when two barrel vaults intersect at right angles. Groin here means the edge between the intersecting vaults. A groin vault is also known as a cross vault or a barrel vault. A groin vault is used to provide support to ceilings.

To learn more about a groin vault, please check: https://brainly.com/question/2097068