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An angle is the union of two rays having a common:
AEndpoint
BEndorsement
CEnclosure
DEndeavour
Answer & Solution
Correct answer: A. Endpoint
1. Two rays must meet to form an angle.
2. They meet at a single shared point.
3. An angle is the union of two rays having a common endpoint.
4. So the answer is an endpoint.
_Source: OpenStax 'Algebra and Trigonometry 2e', Ch 7 'The Unit Circle: Sine and Cosine Functions'_
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