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5. Name the Property of Congruence that justifies the statement: If AB CD then CD AB. (1 point)

 

Transitive Property

Symmetric Property

Reflexive Property

None of these

 

 

6. Write the converse of the following true conditional statement. If the converse is false, write a counterexample.

 

If x < 30, then x < 20; true.  

If x < 30, then x < 20; false.   Counterexample: x = 27 and x > 27.

If x > 20, then x > 30; false.   Counterexample: x = 25 and x < 30.

If x > 30, then x > 20; true.

 

 

7. Use the Subtraction Property of Equality to complete the following statement.

 

If RS + ST = RT, then RS =?

ST − RT

RT − ST

RT − RS

RS − RT

 

 

8. The true conditional statement, "If (m∠ABC) = m∠ABD, then m∠ABC = 2(m∠ABD)," illustrates which property of equality?

 

Addition Property of Equality

Subtraction Property of Equality

Multiplication Property of Equality

Division Property of Equality

 

 

 

9. The measure of two vertical angles are 8x – 18 and 6x + 14. Find x.

 

16

110

32

70

 
party.girl286  Nov 1, 2017
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