Geometry Vocabulary From Unit 2

Front 1

conditional statement

Back 1

A type of logical statement that has two parts, a hypothesis and a conclusion

Front 2

if-then form

Back 2

The form of a conditional statement that uses the words "if" and "then". The "if" part contains the hypothesis and the "then" part contains the conclusion

Front 3

hypothesis

Back 3

The "if" part of a conditional statement

Front 4

conclusion

Back 4

The "then" part of a conditional statement

Front 5

converse

Back 5

The statement formed by switching the hypothesis and conclusion of a conditional statement

Front 6

negation

Back 6

The negative of a statement. The negation symbol is ~

Front 7

inverse

Back 7

The statement formed when you negate the hypothesis and conclusion of a conditional statement

Front 8

contrapositive

Back 8

The statement formed when you negate the hypothesis and conclusion of the converse of a conditional statement

Front 9

equivalent statements

Back 9

Two statements that are both true or both false

Front 10

perpindicular lines

Back 10

Two lines that intersect to form a right angle. The symbol for "is perpindicular to" is ⊥

Front 11

line perpindicular to a plane

Back 11

A line that intersects the plane in a point and is perpindicular to every line in the plane that intersects it

Front 12

biconditional statement

Back 12

A statement that contains the phrase "if and only if". The symbol for "if and only if" is ↔

Front 13

logical arguement

Back 13

An arguement based on deductive reasoning, which uses facts, definitions, and accepted properties in a logical order.

Front 14

law of detachment

Back 14

If p→q is a true conditional statement and p is true, then q is true

Front 15

law of syllogism

Back 15

If p→q and q→r are true conditional statements, then p→r is true