We don't know if the 28-degree angle shows up in a triangle, a parallelogram,
a kite, parallel lines cut by a transversal, etc. That makes a big difference. You
haven't even told us how many other angles there are. Could it possibly be
that there was a drawing that went along with this question ?
The other two angles are also 40 degrees and 140 degrees.
60 degrees. There are 180 degrees in a triangle.
The other two angles will be 40 degrees each.
Supplementary angles add up to 180 degrees. If one angle = 130 degrees the other must be 180 - 130 = 50 degrees
Two angles that have the same measure and sum up to 90 degrees are complementary angles. For example, if one angle measures 45 degrees, the other angle will also measure 45 degrees, and their sum will be 90 degrees.
The other two angles are also 40 degrees and 140 degrees.
Its other 3 angles are 37 degrees, 143 degrees and 143 degrees
60 degrees. There are 180 degrees in a triangle.
If one angle is 10 degrees, its opposite angle is also 10 degrees. Since consecutive angles are supplementary, each pair of angles has to add up to 180 degrees so the other angles have to be 170 degrees. Therefore this parallelogram has two 10 degree angles and two 170 degree angles.
The other two angles will be 40 degrees each.
Supplementary angles add up to 180 degrees. If one angle = 130 degrees the other must be 180 - 130 = 50 degrees
Two angles that have the same measure and sum up to 90 degrees are complementary angles. For example, if one angle measures 45 degrees, the other angle will also measure 45 degrees, and their sum will be 90 degrees.
Opposite angle is 45 degrees and the other 2 angles are both 135 degrees the perimeter has nothing to do with the angles.
The sum of the internal angles of a triangle is 180 degrees. Since you know this is a right-angled triangle, you know that one side is 90 degrees. If the other angle is 28 degrees, then you know that the remaining angle must be 180 - 90 - 28 = 62 degrees.
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.
23 degrees and 67 degrees
The other acute angle in that triangle is 40 degrees.