To determine the measure of the angle using the outer scale on the protractor, follow these steps:
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Identify the Left Ray Measurement: Locate where the left ray intersects with the outer scale of the protractor. Record this measurement in degrees.
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Identify the Right Ray Measurement: Locate where the right ray intersects with the outer scale of the protractor. Record this measurement in degrees.
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Calculate the Angle Measure:
- If the left ray reads a lower measurement than the right ray, simply subtract the left ray measurement from the right ray measurement.
- If the left ray reads a higher measurement than the right ray, you'll need to subtract the larger from the smaller and may need to add 180° if it crosses the 0° mark.
Let’s say you found:
- The left ray goes through 30 degrees on the protractor.
- The right ray goes through 70 degrees on the protractor.
Then, the measure of the angle would be calculated as follows:
\[ \text{Angle Measure} = \text{Right Ray} - \text{Left Ray} = 70^\circ - 30^\circ = 40^\circ \]
Thus, the final answer would be:
- The measure of the ANGLE is 40 degrees.
Make sure to input the actual measurements you observed from the protractor for your specific angle.