Could you check my answers in this album? Even just one or two answers will do. Thank you! I appreciate it.

http://imgur.com/Bkw6Brn,E7MGlLK,uuITm3H,fMh5wK0,UYrTwTV,FwA8Ssi,1vmd093,1YYlnRL,1O14iJc,ai01Ou2,NCbkv4g,hK34Ucu,FQVo0ih,D2UkhhN#0

Question

Could you check my answers in this album?  Even just one or two answers will do. Thank you! I appreciate it.

http://imgur.com/Bkw6Brn,E7MGlLK,uuITm3H,fMh5wK0,UYrTwTV,FwA8Ssi,1vmd093,1YYlnRL,1O14iJc,ai01Ou2,NCbkv4g,hK34Ucu,FQVo0ih,D2UkhhN#0

nerdyotter · Answer

Oh, and I understand that none of the answer options for question 4 are correct.  If I don't get that question right, I'll have to Email my teacher about it. This happens a lot more than it should.

mathstudent55 · Answer

1 - 3 all correct
4. all answers are incorrect, but you chose the closest
5-7 all correct
8 I don't know bec I don't know topology
9 correct
10 incorrect
11 - 14 correct

nerdyotter · Answer

@mathstudent55 Thank you! But, if I may ask, why is 10 incorrect?

nerdyotter · Answer

Would it be 4 : 9, since the scale factor is 2/3 and I have to square that?

mathstudent55 · Answer

I'm glad you asked.

When two figures are similar, and there is a scale factor between them, then the scale factor applies to the linear measurements.

Look at these two cubes:
|dw:1439516359301:dw|