+2448 
If so, state how you know they are similar and complete the similarity statement.
+36916 First one
take the ratio of the long sides of each triangle 66/55 = 1.2
take the ratio of the NEXT longest legs 60/50 = 1.2 Good so far
IF the ratio of the third legs is the same (1.2), the triangles are similar
55/45 = 1.2222 Uh-Oh...... the triangle are NOT similar (Close though)
Second one
can you tell me for what the little red arrows stand ?
+2448 I'm not sure what the red arrows mean...>.< Sorry
For 8) I think it's and they are similar but I don't know how to explain it. Triangle ALM
+36916 IF the little red arrows mean the lines are 'slanted' the same, then you would have similar triangles because all three angles in each are the same
+2448 I totally messed up what I was trying to say lol, but oh well. Am I right though? Is it A)
