Patterns and Counterexamples

Which is a counterexample to the following statement?

If an animal is brown, then it is a dog.

• Squirrel

• Chocolate lab

• White rabbit

• Blue jay

Which is a counterexample to the following statement?

If an angle is obtuse, then it is $125\degree$ .

•  $90\degree$  

•  $57\degree$  

•  $160\degree$  

•  $180\degree$  

Tags

CCSS.HSG.CO.A.1

Which is a counterexample to the following statement?

If  $LM\cong MN$  , then  $M$   is the midpoint of  $LN$  .

• 
• 
• 
• None of these

Tags

CCSS.HSG.CO.B.6

CCSS.HSG.CO.C.10

Which is a counterexample to the following statement?

If two angles add up to  $180\degree$ , then they are a linear pair.

• 
• 
• 
• None of the above

Tags

CCSS.HSG.CO.C.9

Which is a counterexample to the following statement?

If you add two numbers, then the sum is odd.

• 2+5=7

• 3+2=5

• 1+8=9

• 2+4=6

Tags

CCSS.7.NS.A.1

CCSS.7.NS.A.3

What is the next term in the sequence?

1, 1, 2, 3, 5, 8, 13, ...

• 15

• 21

• 19

• 17

Tags

CCSS.HSF.BF.A.2

CCSS.HSF.IF.A.3

What is the next term in the sequence?

2, 5, 8, 11, 14, ...

• 17

• 15

• 20

• 18

Tags

CCSS.HSF.BF.A.2

Which is a counterexample to the following statement?

If you live in Texas, then you live in Carrollton.

• New York City

• Dallas

• Houston

• Los Angeles

Which is a counterexample to the following statement?

If a number is prime, then it is odd.

• 29

• 5

• 2

• 1

Which is a counterexample to the following statement?

If two angles are supplementary, then they are both  $90\degree$ .

•  $45\degree$  and  $45\degree$  

•  $100\degree$  and  $80\degree$  

•  $120\degree$  and  $10\degree$  

•  $22\degree$  and  $68\degree$  

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.7