At a certain University, CS students must choose a 7 character password consisting of the16 hexadecimal characters (0-9, A-F). The systems administrator hated the 1970’s pop bandABBA and requires that all passwords exclude the 4 contiguous letters making up the wordABBA from appearing anywhere in the password. A1B2B3A or AB123BA would be ok (theletters in the word ABBA are not contiguous), but ABBA123 and 1ABBA23 are disallowed. How many legal passwords are possible? (

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.

280 degrees

step-by-step explanation:

first, take -800 and add it to 360 until you get a positive number