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# Geometry chapter 2 r

### geometry stuff

What is a logical statement that has 2 parts; a hypothesis and a conclusion? p-q Conditonal statement
The negation of q- p contrapositive
q-p converse
negation of p-q inverse
statement that uses if and only if. it can only be accurate if the conditional and converse are correct. Biconditional statement
if p-q is true, and if p is true, then q is true. Law of Detachment
If p-q is true, and if q-r is true, then p-r is true. Law of Syllogism
Intersecting lines that form a right angle Perpendicular
If a=b, then a+c=b+c Addition property of equality
If a=b, then a divided by c = b divided by c Division property of equality
For any real #, a=a Reflexive property of equality
If a=b, then b can always replace a Substitution property of equality
A=B, then B=A Symmetric Property of equality
If a=b, and b=c, then a=c Transitive property of equality
When you refer to a property of ______, you must include angle or segment congruence
When writing an indirect proof, you start by _______ the __________ Assuming opposite
True statement that follows as a result of other true statements Theorem
If two angles are complementaryto the same angle, than the 2 angles are congruent Congruent complements thearem
If two angles are supplementary to the same angle, then the other 2 angles are congruent Congruent supplements theorem
If two angles form a linear pair, then they are supplementary Linear Pair postulate
All right angles are congruent Right angle congruence theorem
Vertical angles are congruent Vertical angle congruence theorem
Two statements that are both true or both false Equivalent statements
You can justify a proof by putting theorem, postulate, property, definition or given
Created by: bellesies