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A regular convex polygon has 14 sides. What is the sum of the measures of the interior angles?

A. 2160°

B. 2230°

C. 2520°

D. 2770°


Sagot :

To determine the sum of the measures of the interior angles of a regular convex polygon with 14 sides, we use the following geometric principle.

1. Understand the formula: The sum of the interior angles of a polygon is given by the formula [tex]\((n - 2) \times 180^\circ\)[/tex], where [tex]\(n\)[/tex] is the number of sides of the polygon.

2. Identify the number of sides: For this problem, [tex]\(n = 14\)[/tex].

3. Plug the value into the formula: Substitute [tex]\(n = 14\)[/tex] into the formula:
[tex]\[ (n - 2) \times 180^\circ = (14 - 2) \times 180^\circ \][/tex]

4. Simplify the equation:
[tex]\[ (14 - 2) = 12 \][/tex]

5. Multiply by 180°:
[tex]\[ 12 \times 180^\circ = 2160^\circ \][/tex]

So, the sum of the measures of the interior angles of a regular convex polygon with 14 sides is [tex]\(2160^\circ\)[/tex].

Therefore, the correct answer is:
A. 2160°
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