Interior Angles

This video tutorial explores the angles in polygons, focusing on the sum of interior angles and the calculation of one interior angle in regular polygons. It explains how to determine the sum of interior angles by dividing polygons into triangles and highlights the difference between regular and irregular polygons. The video concludes with practice questions and encourages viewers to engage with the content.

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

• 180 degrees

• 360 degrees

• 540 degrees

• 720 degrees

If a pentagon is divided into triangles, how many triangles are formed?

• 5 triangles

• 4 triangles

• 3 triangles

• 2 triangles

What is the size of one interior angle in a regular pentagon?

• 108 degrees

• 120 degrees

• 180 degrees

• 128.6 degrees

How do you calculate the size of one interior angle in a regular polygon?

• Multiply the number of sides by 180

• Add 180 to the number of sides

• Subtract two from the number of sides

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

What is the sum of the interior angles of an octagon?

• 720 degrees

• 1260 degrees

• 900 degrees

• 1080 degrees