ANSWER AS SOON AS POSSIBLE PLEASE: 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.

a

Step-by-step explanation:

the protractor measure angle up to 90° and more

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.

i'll be glad to : )