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 Everyday Examples
 Theorem:  A theorem is a statement that has been proven to be true or proposed as a demonstrable truth.
We often use theorems as "If" and "then" statements to establish facts or conclusions based on a hypothesis in daily life. Examples:

If you know or believe that all things with wings can fly, then you may say that "If it had wings, then it can fly." A counterexample to this theorem would be penguins. They have wings but they cannot fly. Thus, this theorem is not true.

If you know that the shortest player in the National Basketball Association league is 7 feet tall, then when you heard someone is playing in the NBA you can say that "If he plays basketball in NBA, then he is at least 7 feet tall." If there is any player shorter than 7 feet then your theorem is not true.