Find the Sum of the Angles of a Polygon with 9

question 78

Multiple Choice

Find the sum of the angles of a polygon with 9 sides.

• A) \(1,262 ^ { \circ }\)
• B) \(1,260 ^ { \circ }\)
• C) \(1,270 ^ { \circ }\)
• D) \(1,250 ^ { \circ }\)
• E) none of these

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Definitions:

Flossing Frequency

The recommended regularity of cleaning between teeth with dental floss to prevent gum disease and dental decay.

Gum Disease

A set of inflammatory conditions affecting the tissues surrounding the teeth, which can lead to redness, swelling, and in severe cases, tooth loss; also known as periodontal disease.

Incidence

The rate or frequency at which a new event or case occurs in a specific population over a certain period of time.

Internally Valid

The extent to which a research study provides evidence of a cause-and-effect relationship between variables, within the context of the study.