Somebody...Please help me with a few questions......

Question

yanasidlinskiy · Answer

attachment

yanasidlinskiy · Answer

@mathmale  ??
@SolomonZelman  ??

mathslover · Answer

From 4th point, you have AB = CD, right?

yanasidlinskiy · Answer

Yes.

mathslover · Answer

Okay, so, add BC both sides.

mathslover · Answer

$\bf AB + \color{blue}{BC} = CD + \color{blue}{BC} $

mathslover · Answer

That is what you have in the point 5.

yanasidlinskiy · Answer

Oh...wait...Are you asking if I found the measures of them?? Or what...Because I need to know what
 $\bf AB + \color{blue}{BC} = CD + \color{blue}{BC}$ -------is?? In math terms...

mathslover · Answer

I'm not sure that what your question requires it as a statement. 
But, as per my memory, it is a postulate.

yanasidlinskiy · Answer

Oh!:)Ok. Do you mind helping me with 8?? What is that one in math terms??

mathslover · Answer

Yana, for point 5, it is called Addition Property (a = b then a + c = b + c )

yanasidlinskiy · Answer

Ok.! got it! For eight??

mathslover · Answer

Can you tell me, according to which congruency criteria, are both triangles congruent?

yanasidlinskiy · Answer

You want the name for it??

mathslover · Answer

Yes.

yanasidlinskiy · Answer

Umm..Woudn't it be geometry...(wierd)...that's what is says in my book..I'm positive 100% that is not the correct answer..

yanasidlinskiy · Answer

Woudn't it be like third angle theorm......something like that...??

mathslover · Answer

See, you have : 

$\angle A = \angle D \
AF = DE ~~ (given) \
AC = BD $ 

So, if you locate these things in the figure, you will get to know that it is : 
SAS Criteria (Side angle Side)

yanasidlinskiy · Answer

Ok..So SAS would be my answer..Correct??