Question

What information does the appositive phrase provide for the reader? Most people are familiar with asterism’s, informal constellation names such as the Big Dipper

Answer 1

A proper noun associated with another noun

Step-by-step explanation:

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Answer 2

The appositive phrase defines the term asterism. It tells the reader that an asterism is an "informal constellation name".

Appositive phrases are often surrounded by commas. They follow a noun and rename or describe it. Another example is "My dog, a yellow lab, loves to play ball." In this sentence the appositive phrase is "a yellow lab". It describes the noun - dog using a noun - lab.