The flattened corner is divided into 5 equal parts. How many degrees does each corner contain?

To solve this problem, we introduce a conditional variable “X”, through which we denote the number of degrees that each of the five parts of the extended angle contains. Let’s take into account the fact that the unfolded angle is 180 degrees. Then, based on the data of the problem, we get the following equation: 5 x X = 180. Solving this equation, we get X equal to 36 degrees.
Answer: each of the five parts is equal to 36 degrees.