Understanding Syllogisms
A Grade 12 ELA worksheet on identifying, analyzing, and constructing valid syllogisms.
Includes
Standards
Understanding Syllogisms
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Read each section carefully and answer the questions to the best of your ability. This worksheet will test your understanding of syllogisms, their structure, and their validity.
A syllogism is a form of deductive reasoning where a conclusion is drawn from two given or assumed propositions (premises). A classic syllogism structure includes a major premise, a minor premise, and a conclusion. For a syllogism to be valid, the conclusion must logically follow from the premises, regardless of whether the premises themselves are true. For a syllogism to be sound, it must be both valid AND have true premises.
1. Which of the following best describes a valid syllogism?
A syllogism with true premises and a true conclusion.
A syllogism where the conclusion logically follows from the premises.
A syllogism that uses inductive reasoning.
A syllogism with only one premise.
2. Consider the following syllogism: Major Premise: All mammals are animals. Minor Premise: All dogs are mammals. Conclusion: Therefore, all dogs are animals. This syllogism is an example of:
An invalid but sound syllogism.
A valid but unsound syllogism.
A valid and sound syllogism.
Neither valid nor sound.
3. A syllogism consists of two premises and one .
4. For a syllogism to be , its conclusion must logically follow from its premises.
5. If a syllogism is both valid and has true premises, it is considered .
6. All valid syllogisms are also sound.
True
False
7. Inductive reasoning is a type of syllogism.
True
False
8. Construct a valid but unsound syllogism. Clearly label your major premise, minor premise, and conclusion.
9. Explain the difference between a valid syllogism and a sound syllogism.