Which style of roof is supported exclusively by the structure's exterior walls?

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Multiple Choice

Which style of roof is supported exclusively by the structure's exterior walls?

Explanation:
The key idea is how the roof carries its load. An arched roof uses its curved shape to channel weight outward and downward to the exterior walls on both sides, so the walls themselves handle the load without needing interior supports. That makes the roof “supported exclusively” by the exterior walls. Flat and pitched roofs typically rely on interior framing or walls for support, and sawtooth roofs involve multiple pitched sections that often require interior members as well. So the arched roof best fits the description.

The key idea is how the roof carries its load. An arched roof uses its curved shape to channel weight outward and downward to the exterior walls on both sides, so the walls themselves handle the load without needing interior supports. That makes the roof “supported exclusively” by the exterior walls. Flat and pitched roofs typically rely on interior framing or walls for support, and sawtooth roofs involve multiple pitched sections that often require interior members as well. So the arched roof best fits the description.

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