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0
533
2
avatar+492 

Help.

 Jan 23, 2017
 #1
avatar+317 
+5

the first one is C

the second one is A

 Jan 23, 2017
 #2
avatar+107365 
0

If it is not raining, then I will not carry an umbrella

 

Two intersecting lines are perpendicular if and only if they form four 90° angles

 

 

 

cool cool cool

 Jan 23, 2017

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