Respuesta :

Answer:

There are 90° in a quarter circle.

Answer:

90 degrees

Step-by-step explanation:

I believe its 90 degrees because if you have half of a protractor it only goes up to 180 degrees but if you have a whole one (dont know if it exists) you will have 360 degrees but if you put that  into fourths it would result it in being 90 degrees.