How many non-similar triangles have angles whose degree measures are distinct positive integers in arithmetic progression?
Answer Choices
A. 0
B. 1
C. 59
D. 89
E. 178
How many non-similar triangles have angles whose degree measures are distinct positive integers in arithmetic progression?
Answer Choices
A. 0
B. 1
C. 59
D. 89
E. 178