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Arts, 15.04.2020 00:09 babyduckies37

What does the keystone do?
A. Supports the downward and outward thrust of the rounded arch
B. Is a decorative element of the rounded arch
C. Is necessary for a door in a rounded arch
D. Supports the weight of the rounded arch

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What does the keystone do?
A. Supports the downward and outward thrust of the rounded arch
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