An angle of 140 degrees is obtuse because it is greater than 90 but less than 180 degrees
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Each interior angle measures 140 degrees
Each interior angle: 140 degrees Each exterior angle: 40 degrees
An angle that measures 210 degrees is a reflex angle.
The law of any parallelogram says that the angle of one corner is the same as the angle opposite. So the other angles would also be 40 degrees and 140 degrees. Also note that this neatly adds up to a total of 360 degrees - all 4 sided shapes' angles must add up to 360 degrees, so you can work out the angles of a parallelogram just from knowing one angle.
An angle that equals 140 degrees would be considered an "obtuse" angle. This is because it is greater than 90 degrees but does not exceed a straight line of 180 degrees.