Polygon Angles and Error Correction

The video tutorial by Lumo covers Travis computations, focusing on angular closure, error adjustments, and whole circle bearings. It explains how to calculate changes in eastings and northings, emphasizing the importance of accurate measurements and adjustments. The tutorial provides step-by-step instructions for determining bearings and correcting errors, preparing students for further discussions on coordinate calculations.

What is the primary focus of the Travis computations lesson?

• To calculate the area of a circle

• To explore different types of polygons

• To understand the history of Travis

• To learn about angular closure and bearings

What is the formula for the total sum of internal angles in a polygon?

• N - 2 * 90°

• N - 2 * 180°

• N + 2 * 180°

• N * 180°

How is the error in angular closure adjusted?

• By adding 1 degree to each angle

• By distributing the error equally among angles

• By subtracting the error from the largest angle

• By ignoring the error

What is the purpose of calculating whole circle bearings?

• To find the direction of traverse legs

• To determine the area of a polygon

• To measure the height of a building

• To calculate the perimeter of a polygon

How is the change in eastings calculated?

• By subtracting the distance from the bearing

• By adding the distance to the bearing

• By dividing the distance by the cosine of the bearing

• By multiplying the distance by the sine of the bearing

What method is used to correct errors in changes in eastings and northings?

• The Pythagorean method

• The Simpson method

• The Euler method

• The bodage method