x + 4 = 6 then x = 2 What property did we use?
Subtraction Property of Equality
How do vertical angles relate to each other?
They are congruent by the vertical angle theorem
Using a conditional statement - if you repeat the hypothesis of a conditional statement, you can assume the conclusion is also true in this case.
The law of detachment
.5x + 3 = 7 then x + 6 = 14 What property did we use?
Multiplication Property of Equality.
What is the difference between complementary and supplementary angles?
Complimentary add up to 90 and supplementary add up to 180.
If two angles are adjacent, then they share a vertex. Angles 1 and 2 are adjacent. What can you conclude and by what law?
They share a vertex by the law of detachment.
Complete the definition: A polygon is a pentagon, if and only if, ______________.
it has five sides
An angle is always congruent to itself is an example of what property?
Reflexive.
When you use the definition of angle bisector as a reason what are you able to say as the statement
that the two angles are congruent or equal in measure
What can you conclude and by what law? "If a number ends in 0 then it is divisible by 10. If a number is divisible by 10 then it is divisible by 5.
If a number ends in 0 then it is divisible by 5, by the law of syllogism.
It's represented by the symbol ~
negation
If Sam has the same grade as Briggs and Cindy has the same grade as Briggs what can we assume? And what property do we use?
The Sam and Cindy have the same grade by the transitive property.
When you add two adjacent segments created by 3 collinear points together you get the length of the full segment.
This is an example of what postulate
Segment Addition
When the conditional and converse are equivalent statements what kind of statement do you have
A biconditional statement
If you live in Mt. Pleasant then you live in Utah. If you live in Utah, then you live in the US. Zoey lives in Mt. Pleasant.
Zoey lives in the US.
If a hypothesis implies a conclusion, and a new statement starts with that conclusion which also leads to another conclusion,
then the original hypothesis implies the second conclusion. What law is being described here.
Law of Syllogism
When you change from a segment or angle proof to an algebraic proof, you've been able to switch out an equation for a value of a segment or angle. What property allows you to do so.
Substitution.
If supplementary angles are also congruent what do you know about their angle measures
They are right angles.