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2.1-6

Across
A statement that can be written in the form "p if and only if q"; "if p, then q"; if q, then p; "p iff q"; p<->q
The set of numbers that can be written as a ratio of integers
The set of whole numbers and their opposites
A four sided polygon
<A and <B are supplementary
If p, then q.
Presents the steps of the proof and their matching reasons as sentences in a paragraph
An argument that uses logic to show that a conclusion is true
A curve or segment that joins two vertices of the graph
A statement that has been proven
The process of using logic to draw conclusions
The statement formed by negating the hypothesis and the conclusion
A point on the graph
T/F? postulates are always also true when reversed
Uses boxes and arrows to show the structure of the proof
Down
If 2 angles for a linear pair, then they are supplementary.
<A and <B form a linear pair
The logical equivalence of a conditional and its contrapositive
A closed plane figure formed by 3 or more segments such that each segment intersects exactly 2 other segments only at their endpoints and no 2 segments with a common endpoint are collinear
T/F? if the hypothesis is false, the conditional statement is true, regardless of the truth value of the conclusion
If p->q is a true statement and p is true, then q is true.
A statement that is believed to be true
"not p"; ~p
The statement formed by exchanging the hypothesis and the conclusion
A diagram of vertices and edges aka graph