How to find the sum of all interior angles of a polygon ex 2

The video tutorial explains how to find the sum of the interior angles of an 11-gon. It begins by discussing the general approach to finding the sum of interior angles in polygons, then introduces a formula to simplify the process. The tutorial walks through the calculation step-by-step, ensuring accuracy and verifying the result. The final sum of the interior angles is confirmed to be 1620 degrees.

What is the initial method suggested for finding the sum of interior angles of a polygon?

• Using a calculator

• Drawing triangles within the polygon

• Measuring each angle individually

• Using a protractor

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

• (n - 2) * 180

• n * 360

• n * 180

• (n + 2) * 180

How many sides does an 11-gon have?

• 10

• 9

• 12

• 11

What is the sum of the interior angles of an 11-gon?

• 1800 degrees

• 1620 degrees

• 1980 degrees

• 1440 degrees

What is the result of multiplying 9 by 180 in the calculation?

• 900

• 180

• 720

• 1620