The set of consists of counting numbers, their opposites, and zero.

Integers

Step-by-step explanation: The set of counting numbers (1, 2, 3, 4, 5) is called the set on natural numbers. This set of numbers starts at 0 and goes on indefinitely. When we include 0 in the set of natural numbers, the new set is called whole numbers. (0, 1, 2, 3, 4, 5) If we also include a numbers opposite, then we are dealing with integers. Integers are positive and negative whole numbers, including 0, but they can't be in the form of fractions or decimals. Some examples of integers can be (-25, -5, -16, 73).

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are