Write a counterexample for the following statement: “the sum of two even numbers is always positive.”
Negative numbers
Finish each sentence.
P is the
Q is the
Hypothesis
Conclusion
Assuming Line AB bisects Segment PR at point T, what can be assumed?
PT=RT, T is the midpoint of PR
Write the converse of: “If it is Wednesday, then it is fun.”
If it is fun, then it is Wednesday.
Define Linear Pair
Two adjacent supplementary angles
How many examples should you have when writing a conjecture?
3
Create a truth table for ~p ➡️ q
FFTT
TFTF
TTTF - final
What is true of vertical angles?
They are congruent
What two statements must be true in order to write a biconditional statement?
Converse and Conditional
BC=GD, YT=GD, so BC=YT.
Name the property that was used.
Transitive Property of Equality
Make a conjecture about the sum of any 5 consecutive integers.
The middle number times 5 is the sum
Create a truth table for ~(p➡️~q)
TTFF
FTFT
FTTT
TFFF - final
Draw a diagram and write an equation that represent the Segment Addition Postulate.
See student answers
Write “If two lines are parallel, then they never intersect.” As a bicondional statement.
Two lines never intersect if and only if they are parallel.
Two lines are parallel if and only if they never intersect.
If angles 1 and 2 are both right angles, what reason would allow me to say that angles 1 and 2 are congruent?
Right Angle Congruence Theorem
What field are truth tables most related to?
Computer science, law
Create a truth table for ~(p ➡️q)
FTFF
Angle 2 is congruent to Angle 1, so Angle 1 is congruent to Angle 2.
Name the property.
Symmetric Property of Angle Congruence
Write the inverse of “If it is December, then it is okay to play Christmas music.”
If it is not December, then it is not okay to play Christmas music.
Fill in the blank
Congruent Supplements Theorem
What type of reasoning uses facts, definitions, and the laws of logic?
Deductive
If p, then q. (p ➡️ q)
Write the inverse in p, q form using an arrow to show direction.
~p ➡️~q
Correct the error in notation using the fewest number of edits.
<ABC = <DEF
Change = to “congruent”
The conditional statement is always logically equivalent with its
Contrapositive
Fill in the blank.
Congruent Complements Theorem