Question

Which of the following statements about using a protractor are correct?

The protractor measures angles up to 90°.
The vertex of the angle must be at the 0° mark.
One ray of the angle must point at 0°.
The protractor measures angles that open from left or from the right.

Answer 1

the protractor measures angles that open from left or from the right

Answer 2

(B) (C) and (D)

Explanation:

An instrument for measuring angles, typically in the form of a flat semicircle marked with degrees along the curved edge is known as Protractor.

The protractor measures angles up to 180°, thus option A is incorrect that is the protractor measures angles more than 90°.

In order to construct any angle using the protractor, the vertex of the angle must be at 0° mark, thus option B is correct.

Option C is correct because a ray is a line that has one defined endpoint is called a ray and extends endlessly in one direction and that point must point at 0°.

Also, The protractor measures angles that open from left or from the right, thus option D is correct.