QUESTION IMAGE
Question
exercises
find the sum of the measures of the interior angles of each convex polygon.
- decagon
- 16 - gon
- 30 - gon
- octagon
- 12 - gon
- 35 - gon
Response
Problem 1: Decagon
Step1: Recall the formula for the sum of interior angles of a polygon.
The formula for the sum of the interior angles of a convex polygon with \( n \) sides is \( S=(n - 2)\times180^{\circ} \). A decagon has \( n = 10 \) sides.
Step2: Substitute \( n = 10 \) into the formula.
\( S=(10 - 2)\times180^{\circ}=8\times180^{\circ} \)
Step3: Calculate the result.
\( 8\times180^{\circ}=1440^{\circ} \)
Step1: Use the polygon interior angle sum formula \( S=(n - 2)\times180^{\circ} \), where \( n = 16 \).
Step2: Substitute \( n = 16 \) into the formula.
\( S=(16 - 2)\times180^{\circ}=14\times180^{\circ} \)
Step3: Compute the value.
\( 14\times180^{\circ}=2520^{\circ} \)
Step1: Apply the formula \( S=(n - 2)\times180^{\circ} \) with \( n = 30 \).
Step2: Substitute \( n = 30 \) into the formula.
\( S=(30 - 2)\times180^{\circ}=28\times180^{\circ} \)
Step3: Calculate the product.
\( 28\times180^{\circ}=5040^{\circ} \)
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\( 1440^{\circ} \)