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# Geometry Ch 1 Vocab

### Terms related to points, lines, planes, and postulates

TermDefinition
postulate facts about geometry that are accepted as true
contrapositive a conditional formed by negating both the hypothesis and conclusion of the converse of a conditional statement
inverse formed by negating both the hypothesis and conclusion of a conditional statement
construction drawing completed using a compass and or straightedge
point basic unit of geometry
converse formed by exchanging the hypothesis and conclusion of a conditional statement
noncoplanar points that do NOT lie on the same plane
coplanar points that lie on the same plane
collinear points that lie on the same line
noncollinear points that do NOT lie on the same line
inductive reasoning used to make a conclusion based on a pattern examples
conjecture a conclusion you reach based on inductive reasoning
conditional statement also known as if-then statements
formula an equation that shows how certain quantities are related
counterexample one example that shows a conjecture is not true
Created by: elithomas
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