How to find the individual measurement of an interior angle for a regular dodecagon

The video tutorial explains how to find the measure of each interior angle of a regular polygon, specifically a dodecagon. It begins with an introduction to the task and a brief explanation of what a dodecagon is, highlighting its twelve equal sides. The teacher then introduces two formulas for calculating interior angles and demonstrates how to use them to find the measure of an individual angle in a regular dodecagon. The calculation process is detailed, resulting in a final angle measure of 150 degrees for each interior angle.

What is a dodecagon?

• A polygon with ten sides

• A polygon with twelve sides

• A polygon with six sides

• A polygon with eight sides

What is true about the sides of a regular dodecagon?

• Only opposite sides are equal

• All sides are equal

• Only adjacent sides are equal

• All sides are different

Which formula is used to find the sum of interior angles of a polygon?

• S = (n + 2) * 180

• S = n + 180

• S = (n - 2) * 180

• S = n * 180

How do you calculate the measure of an individual interior angle of a regular polygon?

• Divide the sum of interior angles by the number of sides

• Multiply the sum of interior angles by the number of sides

• Add the sum of interior angles to the number of sides

• Subtract the number of sides from the sum of interior angles

What is the measure of each interior angle in a regular dodecagon?

• 120 degrees

• 140 degrees

• 130 degrees

• 150 degrees