An angle of 143 degrees would be considered an "obtuse" angle. This is because its degrees measurements exceed 90 but do not go above a straight line of 180 degrees.
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Supplementary angles are pairs of angles whose sum equals 180 degrees. Therefore: 37 degrees + x degrees = 180 degrees. 180 degrees - 37 degrees = x degrees = 143 degrees. The supplement of a 37 degree angle is a 143 degree angle.
It is an obtuse angle because it is greater than 90 but less than 180 degrees
In a parallelogram, opposite angles are equal in measure. Therefore, the angle opposite the 37-degree angle will also measure 37 degrees. The sum of the interior angles of any quadrilateral is always 360 degrees. Since opposite angles in a parallelogram are equal, the other two angles will also measure 37 degrees each.
It is: 180-143 = 37 degrees
When an angle has a measure of 120 degrees, it is an obtuse angle. When an angle is an obtuse angle its measure is between 90 and 180 degrees. That is: 90 degrees < obtuse angle < 180 degrees.