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Chapter 2 Review 1. a) How do we determine length? b) What is the length of the segment connecting the points (2,4) & (8,6)? c) What is the midpoint formula? d) Determine the midpoint of the segment. 2. Complete the following examples of the properties of congruence: Symmetric Property: AB ______ Transitive Property: AB CD CD EF ____________ Reflexive Property: AB ______ 3. “If a number is divisible by 3, then it is divisible by 6. “ Prove this statement is incorrect by giving a counterexample. 4. Draw a conclusion from the given information. Given: If two ∠’s form a linear pair, then they are supplementary. If two ∠’s are supplementary, then the sum of their measures = 180°. Conclusion: 5. Complete the conjectures: a) “The sum of 2 odd numbers is a ____________ number.” b) “The sum of 2 even numbers is a ___________ number.” c) “The product of 2 even numbers is a ___________ number.” 6. Write a justification for each step: m∠ABC=110° m∠ABC=m∠ABD + m∠DBC (1)__________________________ 110°=(3n+8)° + (2n+2)° (2)__________________________ 110°= 5n + 10 (3)__________________________ 100°= 5n (4)__________________________ 20=n (5)__________________________ n=20 (6)__________________________ 7. p: 5 x 5 = 25 q: The day after Monday is Wednesday r: Canada is part of the United States 8. Given the points: A(1,1), B(3,5) and C(5,1) Prove: AB CB 9. What is the negation of the following statements: (a) “I will study for my test” (b) “I will not do well on my test” 10. Given the statement: “If a # is divided by 3, then the result is an even #” Is this statement true or false? If false give a counterexample to prove your conclusion. 11. “If a number is divisible by 14, then it is also divisible by 4. Which of the following is a counterexample? ( 1 ) 28 ( 2 ) 56 ( 3 ) 42 ( 4 ) 84 12. Which statement is always logically equivalent to the original conditional statement? ( 1 ) Inverse ( 2 ) Converse ( 3 ) Contrapositive 13. Write the inverse, converse & contrapositive of the following statement, and determine which is logically equivalent to the original statement: “If it rains, then we get wet” Define: a) Segment Addition- b) Angle Addition- c) Substitution Property- d) Symmetric Property- e) Transitive Property- f) Reflexive Property- g) Inverse h) Converse i) Contrapositive- j) Truth Value- k) Logically Equivalent- l) Negation of a Statement-