They are equal angles.
they have the same angle measure
If two shapes are congruent it means that they are exactly the same, same side lengths and angle measures.
if two angles are supplements of the same angle (or of congruent angles), then the two angles are congruent.
They have the same measures.
No, they cannot, because if you think about it, the sides can be different proportional lengths but have the same angle measures.
No. A radian is a measure of an angle, it is not, itself, an angle. Degrees and radians are measures of angles and the two measures are related by the following conversion: 180 degrees = pi radians
An isosceles triangle, because the angles of a triangle add up to 180 and you already know that one angle measures 120 degrees, the other is 30, and so the unknown angle must also be 30 degrees. Since two of the angles are the same, two of the sides are going to be the same, making it an isosceles triangle.
The two sides (or angles) are said to be congruent.
Congruent angles (or equivalent angles) have the same angle measure.
62 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.
Depending on what type of angle the two angles make up you can. If two angles make up 90 degrees you subtract the angle from 90. If you have a 180 degree angle you do the same thing.