What is the sum of the interior angles of a polygon with 12 sides?
Answer and explanation
Correct answer: D.
- Step 1: A polygon with n sides can be split into n - 2 triangles.
- Step 2: .
Answer
.
Why not the others: : n × 180° was used instead of (n - 2) × 180°. : (n - 1) × 180° was used instead of (n - 2) × 180°. : this is the sum of the exterior angles.
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