Answer:
B
Step-by-step explanation:
The question asks why you can use the argument that two angles are congruent. Hence, you want to have a statement that involves two angles in the two triangles. Only statement B is such a statement.
_____
Multiple choice questions often answer themselves, if you understand what you're reading.
2- and 3- not sure though
Answer:
Step-by-step explanation:
the answer is 12 or 9
Slope is 1
y intercept is also 1