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Sagot :
To determine how many sides a polygon has based on the sum of its interior angles, we can use the formula:
[tex]\[ \text{Sum of interior angles} = (n - 2) \times 180^\circ \][/tex]
where [tex]\( n \)[/tex] represents the number of sides of the polygon. We are given that the sum of the interior angles is 720°. Let's find [tex]\( n \)[/tex] by solving the equation:
1. Set up the equation using the given sum of interior angles:
[tex]\[ 720 = (n - 2) \times 180 \][/tex]
2. Solve for [tex]\( n \)[/tex]:
- First, divide both sides of the equation by 180 to isolate [tex]\( n - 2 \)[/tex]:
[tex]\[ \frac{720}{180} = n - 2 \][/tex]
- Calculate the left side:
[tex]\[ 4 = n - 2 \][/tex]
- Add 2 to both sides to solve for [tex]\( n \)[/tex]:
[tex]\[ 4 + 2 = n \][/tex]
[tex]\[ n = 6 \][/tex]
Therefore, the polygon has 6 sides.
The correct answer is:
○ A. 6
[tex]\[ \text{Sum of interior angles} = (n - 2) \times 180^\circ \][/tex]
where [tex]\( n \)[/tex] represents the number of sides of the polygon. We are given that the sum of the interior angles is 720°. Let's find [tex]\( n \)[/tex] by solving the equation:
1. Set up the equation using the given sum of interior angles:
[tex]\[ 720 = (n - 2) \times 180 \][/tex]
2. Solve for [tex]\( n \)[/tex]:
- First, divide both sides of the equation by 180 to isolate [tex]\( n - 2 \)[/tex]:
[tex]\[ \frac{720}{180} = n - 2 \][/tex]
- Calculate the left side:
[tex]\[ 4 = n - 2 \][/tex]
- Add 2 to both sides to solve for [tex]\( n \)[/tex]:
[tex]\[ 4 + 2 = n \][/tex]
[tex]\[ n = 6 \][/tex]
Therefore, the polygon has 6 sides.
The correct answer is:
○ A. 6
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