Interior Angles of Polygons

The video tutorial explains how to calculate the sum of interior angles in any polygon. It begins with an introduction to the concept of interior angles and provides examples using a pentagon and a regular octagon. The tutorial introduces a formula, n-2 times 180, to calculate the sum of interior angles, where n is the number of sides. The video also demonstrates how to find one interior angle in a regular polygon by dividing the sum by the number of sides.

What is the sum of interior angles in a triangle?

• 90 degrees

• 540 degrees

• 180 degrees

• 360 degrees

How many degrees are there in the sum of interior angles of a quadrilateral?

• 180 degrees

• 450 degrees

• 360 degrees

• 270 degrees

How many triangles can a pentagon be divided into?

• 4

• 5

• 3

• 2

What is the sum of interior angles in a pentagon?

• 900 degrees

• 360 degrees

• 720 degrees

• 540 degrees

What is the formula to calculate the sum of interior angles in a polygon?

• n x 180

• (n-2) x 180

• (n+2) x 180

• n + 180

In the formula (n-2) x 180, what does 'n' represent?

• Number of angles

• Number of sides

• Number of vertices

• Number of triangles

How many sides does a regular octagon have?

• 6

• 7

• 8

• 9

What is the sum of interior angles in a regular octagon?

• 900 degrees

• 1080 degrees

• 1260 degrees

• 720 degrees

How do you find one interior angle in 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

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

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

What is an alternative method to find the sum of interior angles if you forget the formula?

• Divide the polygon into circles

• Divide the polygon into squares

• Divide the polygon into triangles

• Divide the polygon into rectangles