What type of angle is considered a right angle in surveying?

In surveying, a right angle is defined as an angle that measures exactly 90 degrees. While the choice indicating a deflection angle measured clockwise suggests a specific method for measuring angles, it does not accurately define a right angle itself.

In the context of surveying, when establishing right angles, specific techniques such as the use of a carpenter's square, the 3-4-5 triangle rule, or instruments like theodolites come into play to ensure accurate measurements of angles. Understanding that a right angle is, by definition, a precise 90-degree angle is critical in the planning and execution of surveying tasks.

While the other options mention characteristics of angles, none describe the definition of a right angle accurately. It is essential in surveying to have a clear and precise understanding of angles, as they are fundamental in establishing points, submitting design plans, and ensuring that structures are positioned correctly.