Interior and Exterior Angles Explained

This video tutorial covers the concepts of interior and exterior angles in polygons. It explains how to calculate these angles, find their sums, and determine the number of sides in a polygon given an angle. The tutorial provides a formula for calculating the sum of interior angles and demonstrates how to find individual angles in regular polygons. It also covers the properties of exterior angles and how to calculate them. Practice questions are included to reinforce learning.

What is the sum of the interior angles of a triangle?

• 540°

• 360°

• 180°

• 90°

How many triangles can be formed inside a hexagon?

• 5

• 2

• 3

• 4

What is the formula to calculate the sum of interior angles of a polygon with n sides?

• n * 360°

• (n + 2) * 180°

• (n - 2) * 180°

• n * 180°

What is the sum of the exterior angles of any polygon?

• 720°

• 540°

• 360°

• 180°

How can you find the number of sides of a regular polygon if you know the exterior angle?

• Divide 360 by the exterior angle

• Multiply the exterior angle by 360

• Divide 180 by the exterior angle

• Subtract the exterior angle from 360