The answer should be C because -1 so go down one the it postive 2 so go to the right 2
A net of a triangular prism looks like this
To form a linear pair means that when added, they equal 180 degrees.
but if they have equal measures....180/2 = 90...then they would both equal 90 degrees.....and 90 degrees is a right angle.
So ABC and CBD are both right angles
