Your protractor should be able to determine whether an angle is acute, right, and obtuse, and it should also be able to give you an estimate of its measurement in degrees.
If you fold the plate incorrectly, your angle measurement in degrees will be slightly inaccurate. If your 90° angle is inaccurate, nearly all other measurements will be as well
Use a whole plate and continue your angles through the full 360°You can add marks for radians, a different kind of angle measurement
taking measurements, research methods