Question

What is the angle name for half a revolution?

Answer 1

The angle name of half a revelution = Straight angle .

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Angle of a revelution = 360°

Angle of half a revelution = 360/2 = 180° = Straight angle


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Answer 2

The angle name for half a revolution is "Straight angle".

• A straight angle is defined as an angle that measures 180°. The straight angle appears as a straight line.
• Now, as we know that a revolution is said to be complete when the angle turned is 360°. E.g., a particle moving along the circumference of a circle will make an angle of 360° at the center, when it returns to its initial position or, completes a revolution.
• It means a complete or full revolution has 360°.
• So, a half revolution will have $\frac{360}{2}$ = 180°.
• From the aforementioned definition, we can see that an angle measuring 180° is called the straight angle.
• Thus, the angle name for half a revolution is "Straight angle".

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