I really don't understand what it is asking. Also I need help.

1) 45°; 2) 3√2.

Step-by-step explanation:

1) according to the condition the lengths BC=AC and m(∠C)=90°, it means m(∠θ)=(180-90)/2=45°;

2) if AC=BC=3 and m(∠C)=90°, then AB=AC*√2=3√2

250

step-by-step explanation:

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer