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Vocabulary for Geometry_1.2

algebraic proof A proof that is made up of a series of algebraic statements. The properties of equality provide justification for many statements in algebraic proofs.
axiom A statement that is accepted as true.
deductive argument A proof formed by a group of algebraic steps used to solve a problem.
exterior angle An angle formed by one side of a triangle and the extension of another side.
informal proof A paragraph proof.
paragraph proof An informal proof written in the form of a paragraph that explains why a conjecture for a given situation is true.
postulate A statement that describes a fundamental relationship between the basic terms of geometry. Postulates are accepted as true without proof.
proof A logical argument in which each statement you make is supported by a statement that is accepted as true.
segment congruence Segments with the same measure are congruent, congruence of segments is also reflexive, symmetric, and transitive.
theorem A statement or conjecture that can be proven true by undefined terms, definitions, and postulates.
two-column proof A formal proof that contains statements with reasons organized into two columns. Each step is called a statement, and the properties that justify each step are called reasons.
Created by: mtoepper