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

do we get the following statements?
\(\Huge\color{goldenrod}\odot\) \(\Huge\color{purple}{\text{___}}\)\(\Huge\color{blue}\odot\)

Answer 2

C.

Answer 3

C is common practice, but I think D is the correct answer.

Answer 4

ok