Insulation

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Question 1 of 1

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0
211428
0
180
block

How big is a corner?

Select the correct answer(s).  

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211429
0
180
none
211430
0
180
none
211431
0
180
none
211432
0
180
none
211433
0
180
none
211434
0
180
none
211435
0
180
none