Geometry

Question Analysis

This question involves using a protractor to measure an angle. The main focus is identifying the correct scale on the protractor and accurately determining the angle's measurement.

 

Key Concept Explanation

A protractor has two scales (inner and outer) ranging from 0° to 180°. To measure an angle, align one side with the 0° mark on the protractor and read the value at the intersection of the other side and the appropriate scale.

 

Step - by - Step Solution

1. Determine the scale:

Since the initial side of the angle is on the  mark on the left - hand side of the protractor, we use the outer - ring scale.

 

2. Read the measurement:

The terminal side of the angle intersects the outer - ring scale at

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