The inner angles of a triangle will always add up to 180. Assuming that this particular triangle is a right triangle (that is, one of it's angles is 90 degrees), you can find the other angle by subtracting the known angles from 180:
180 - 57 - 90 = 33 degrees
If the triangle is an equilateral or a scalene triangle, the other angles cannot be calculated without additional information.
They each measure 60 degrees
The third angle measures 18 degrees.
Each interior angle of an equilateral triangle measures 60 degrees
It is a right angle triangle and angle A measures 15 degrees.
It is a right angle triangle and its 3rd angle is 70 degrees.
It is a right angle triangle and the 3rd angle will measure 30 degrees
It is a right angle triangle and the 3rd angle will measure 30 degrees
77 degrees
25 degrees
The third angle is 34.5 degrees
20 degrees
105
To find the measure of the third angle of a triangle, you can use the fact that the sum of all three angles in a triangle is always 180 degrees. So, if one angle measures 50 degrees and the other measures 85 degrees, you can subtract their sum from 180 to find the measure of the third angle. Therefore, the third angle would measure 180 - 50 - 85 = 45 degrees.
If you mean an equilateral triangle then the 3rd angle is 60 degrees
They each measure 60 degrees
The missing angle measure is 100 degrees.
The third angle measures 18 degrees.