Answer :

Final answer:

An acute angle is defined as an angle measuring less than 90°, which makes the statement true. For measurement tools, a theodolite is used for precise angle measurement and may feature a blade mechanism.


Explanation:

Understanding Acute Angles


An acute angle is defined as an angle that measures less than 90°. Therefore, the statement "An acute angle is less than 90°" is True.



Measurement Tools


The second part of your question involves identifying a measurement tool. A protractor is commonly used to measure angles, but it seems you are thinking of a tool that has a blade and a tor. This designation might refer to a theodolite or a similar device used for measuring angles in horizontal and vertical planes, and it can have a blade-like feature in its design.



Overall, angles can be precisely measured using tools designed for geometry, helping us understand and visualize different angle types, including acute angles.


Learn more about Angle Measurement here:

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