Interior Angles and Bearings

The video tutorial explains how to find the bearings, azimuth, and interior angles of a five-sided polygon. It provides step-by-step calculations for each point of the polygon, starting with the given bearings and using them to determine the interior angles at points A, B, C, D, and E. The tutorial concludes by verifying the sum of the interior angles to ensure accuracy.

What is the primary focus of the video tutorial?

• Finding the area of a polygon

• Learning about different types of triangles

• Understanding bearings, azimuth, and interior angles

• Calculating the perimeter of a polygon

How is the interior angle at point A calculated?

• By subtracting 20 degrees from 85 degrees

• By adding 85 degrees and 20 degrees

• By multiplying 85 degrees by 20 degrees

• By dividing 85 degrees by 20 degrees

What is the interior angle at point B?

• 113 degrees

• 105 degrees

• 120 degrees

• 77 degrees

Which operation is used to find the interior angle at point C?

• Multiplication

• Division

• Subtraction

• Addition

What is the interior angle at point D?

• 105 degrees

• 77 degrees

• 113 degrees

• 125 degrees

Which angle is subtracted from 90 degrees to find part of the interior angle at point C?

• 78 degrees

• 25 degrees

• 20 degrees

• 35 degrees

What is the bearing of point D towards point E?

• South 25 degrees east

• North 35 degrees west

• South 78 degrees west

• North 20 degrees east

How do you verify the correctness of the interior angles?

• By comparing them to exterior angles

• By ensuring each angle is less than 90 degrees

• By checking if their sum is 540 degrees

• By measuring them with a protractor

What is the sum of the interior angles of the polygon?

• 360 degrees

• 540 degrees

• 180 degrees

• 720 degrees

What is the interior angle at point E?

• 77 degrees

• 113 degrees

• 125 degrees

• 105 degrees