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Exterior Angles of Polygons Score1/2 Penalty: mone Question Watch Video Show Eramples The exterior angle of a regular polygon measures \( 40^{\circ} \). How many sides does the polygon have? Zalyers Priyens Answer stempt lout of 2 Falygons (Level2) Submit tnower

Ask by Adkins Nichols. in the United States
Mar 11,2025

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The polygon has 9 sides.

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**Step 1:** The formula for the exterior angle \( E \) of a regular polygon with \( n \) sides is: \[ E = \frac{360^\circ}{n} \] **Step 2:** We are given \( E = 40^\circ \). Substitute this value into the formula to form the equation: \[ \frac{360^\circ}{n} = 40^\circ \] **Step 3:** Solve for \( n \) by multiplying both sides of the equation by \( n \): \[ 360^\circ = 40^\circ \times n \] **Step 4:** Divide both sides by \( 40^\circ \) to isolate \( n \): \[ n = \frac{360^\circ}{40^\circ} \] **Step 5:** Compute the result: \[ n = 9 \] The polygon has \( 9 \) sides.

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Did you know that the sum of the exterior angles of any polygon, regardless of the number of sides, is always \(360^{\circ}\)? This means when you know the measurement of one exterior angle, you can find out how many sides it has by dividing \(360^{\circ}\) by that angle's measure. So, if your polygon has an exterior angle of \(40^{\circ}\), you divide \(360^{\circ}\) by \(40^{\circ}\) to find it has 9 sides! Now, here's a fun fact: regular polygons are not just mathematical concepts; they show up all around us! Think about a soccer ball (which is a truncated icosahedron), or even the stop signs you see while driving, which are octagons! Polygons can be found in architecture, art, and nature, turning the abstract into fascinating real-world structures!

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