What is the half-circle device used for measuring angles called?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Get ready for the MCA Math Vocabulary Test with our quiz. Study with engaging flashcards and multiple choice questions, each with helpful hints and explanations. Ace your test with confidence!

Multiple Choice

What is the half-circle device used for measuring angles called?

Explanation:
An instrument used to measure angles is called a protractor. Protractors are typically shaped as a half-circle with degree marks from 0 to 180. To measure an angle, you align the angle’s baseline with the straight edge of the protractor and read where the other ray crosses the curved edge. So the standard name is protractor, which is why that short answer is the best choice. Describing it as a half-circle protractor is technically accurate about its shape, but the widely accepted name is protractor. A sextant is for navigation and celestial angles, and an angle ruler isn’t the common term for this measuring tool.

An instrument used to measure angles is called a protractor. Protractors are typically shaped as a half-circle with degree marks from 0 to 180. To measure an angle, you align the angle’s baseline with the straight edge of the protractor and read where the other ray crosses the curved edge. So the standard name is protractor, which is why that short answer is the best choice. Describing it as a half-circle protractor is technically accurate about its shape, but the widely accepted name is protractor. A sextant is for navigation and celestial angles, and an angle ruler isn’t the common term for this measuring tool.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy