A triangle always equals 180 degrees so to find the degree of angle c is you must find out what the other angles are . In this picture it shows that the triangle directly across from the triangle you are trying to figure out the angle for .They are identical triangles so that means that angle d is 24 degrees so you have 24 for one corner of the triangle . Angle d and c are identical also so that means angle c is also 24 degrees . So that means (if you were solving for the whole triangle) that angle c and d are both 24 degrees meaning the unknown angle or the top of the triangle would be 132 degrees. So the answer is C=24 degrees. Hope this helped atleast a little .
