True arches were built with interlocking blocks called voussoirs and fitted with:
AKeystones
BPendentives
CSquinches
DBrackets
Answer & Solution
Correct answer: A. Keystones
1. Arches could then bear the weight of domes.
2. Keystones locked the voussoirs.
3. Domes rested on pendentives and squinches.
_Source: syllabus An Introduction to Indian Art, Chapter 8, Some Aspects of Indo-Islamic Architecture._
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