When you start from a given set of rules and conditions and determine what must be true, you are using Deductive reasoning.
Deductive Reasoning--
In this logical process we start by taking a set of premises which are assumed to be true i.e. we start with a general set of information and reach to a certain or specific conclusion.
It is also known as: top-down logic.
It is opposite of inductive reasoning.
Example--
All dogs can bark.
Rocky is a dog.
Rocky can bark.
When you start from a given set of rules and conditions and determine what must be true, you are using deductive reasoning.
Deductive reasoning or deductive thinking can be defined as the way in a person draw or reach a conclusion based on valid facts or based on generally acceptable true facts.
Example of deductive reasoning is when a person take a valid or true statement to draw a conclusion.
Therefore you are using deductive reasoning.
Learn more about deductive reasoning here:https://brainly.com/question/860494
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