Because the 8 parts are equal, there is an equal chance of landing on each part. The chance of landing on any part is 1/8. This means that it would be impossible to predict with certainty which section will be landed on, because there is an equal chance of each.
The probability of landing on each of the eight parts is equal since the 8 parts are equal. Landing on any part has an 8 percent chance. The odds of landing on one of the sections are equal, so it is impossible to predict exactly where the ball will fall.