A 331 degree angle is a reflex angle and it nearly looks like a circle because there are 360 degrees in a circle.
Use Protractor Three Times
Since a full circle is 360°, a 331° angle is the outside measure of a 29° angle.
Since the angle of 331⁰ is in the fourth quadrant, then the measure of its reference angle in the first quadrant is 360⁰ - 331⁰ = 29⁰ .
It's hard to say, because there are so many possibilities.-- If it's in the shape of a circle, then the diameter of the circle is 15.2 inches.-- If it's in the shape of a square, then each side of the square is 13.4 inches.-- If it's in the shape of a rectangle that's not square, then there are aninfinite number of possibilities. Here are a few of them:1" x 180"1.5 x 1202 x 902.4 x 752.5 x 723 x 603.6 x 504 x 454.5 x 404.8 x 371/25 x 365.4 x 331/36 x 307.2 x 257.5 x 248 x 22 1/28.1 x 222/99 x 209.6 x 18 3/49.9 x 18 2/1110 x 1812 x 15The only thing we know for sure is that whatever shape it's in, it hasan area of exactly 180 square inches. And it turns out that this is thebest way to describe how big it is.
An angle of 331 degrees is a reflex angle
29 degrees
Use Protractor Three Times
Since a full circle is 360°, a 331° angle is the outside measure of a 29° angle.
Draw a straight horizontal line. Draw a 29-degree angle below the line. Indicate that 331 is the rest of the space.
To draw an angle of 331 degrees using a protractor, first, draw a straight line that will serve as the initial side of the angle. Place the center hole of the protractor at the endpoint of the line and align the baseline of the protractor with the line. Since 331 degrees is greater than 180 degrees, measure 331 degrees by counting clockwise from the 180-degree mark on the protractor. Mark the point at 331 degrees and then draw a line from the center point through this mark to complete the angle.
Since the angle of 331⁰ is in the fourth quadrant, then the measure of its reference angle in the first quadrant is 360⁰ - 331⁰ = 29⁰ .
It is a reflex angle
29 degrees.
360-331=2929 degrees is your reference angle. Remember your signs, though.
Add 360, giving the answer as 691 degrees.
180 - 331/3 = 1462/3 degrees.