# How to Find the Measurement of the Angle Indicated for Each Trapezoid

A trapezoid is a quadrilateral with one pair of parallel sides. It is a two-dimensional shape that has four sides and four angles. The angles of a trapezoid can be used to determine its area and perimeter. The measurement of the angles indicated for each trapezoid is an important step in calculating the area and perimeter of the shape.

## Measuring the Interior Angles of a Trapezoid The first step when measuring the angle indicated for each trapezoid is to measure the interior angles. To do this, you need to know the lengths of the sides of the trapezoid. Using a protractor, measure the angle between the two non-parallel sides (the two sides that are not parallel to each other). This angle is usually referred to as the “included angle”. The measurement of the included angle will give you the measurement of one of the interior angles. The other interior angles can be determined by subtracting the included angle from 180 degrees.

## Measuring the Exterior Angles of a Trapezoid The second step in finding the measurement of the angle indicated for each trapezoid is to measure the exterior angles. To do this, you will need to measure the angles formed by the two parallel sides of the trapezoid. Using a protractor, measure the angle between the two parallel sides. This angle is referred to as the “excluded angle”. The measurement of the excluded angle will give you the measurement of one of the exterior angles. The other exterior angles can be determined by subtracting the excluded angle from 360 degrees.

## Calculating the Sum of the Interior and Exterior Angles Once you have measured the interior and exterior angles, you can calculate the sum of the angles. The sum of the angles in a trapezoid is always equal to 360 degrees. This is because the angles of a two-dimensional shape always add up to 360 degrees. By adding the measurements of the interior and exterior angles, you can calculate the measurement of the angle indicated for each trapezoid.

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Measuring the angles of a trapezoid is an important step in calculating the area and perimeter of the shape. To find the measurement of the angle indicated for each trapezoid, you need to measure the interior and exterior angles of the trapezoid and then add them together. By doing this, you can accurately calculate the measurement of the angle indicated for each trapezoid.