What is the measure of D E F ? 45 degrees 73 degrees 107 degrees
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Step-by-step explanation:
In geometry, an angle measure can be defined as the measure of the angle formed by the two rays or arms at a common vertex. Angles are measured in degrees ( °), using a protractor. Fun Facts. The protractor was invented by Joseph Huddart in 1801. It was a more complex form of protractor.
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