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Mathematics 20 Online
OpenStudy (anonymous):

I have two questions this time :D <3

OpenStudy (anonymous):

OpenStudy (anonymous):

@iluvlucy

OpenStudy (anonymous):

1. angle PQT

jimthompson5910 (jim_thompson5910):

for the first one, break up the triangles to get |dw:1354998103511:dw| the drawings are a bit off, but you get the idea

jimthompson5910 (jim_thompson5910):

what letter is on both triangles?

OpenStudy (anonymous):

Q

jimthompson5910 (jim_thompson5910):

so the angle will be __Q__ where the blanks that surround the Q will be replaced by letters (so it's going to be something like SQT, PQT, or TQP...basically...we just want Q in the middle)

OpenStudy (anonymous):

Oh that makes sence

jimthompson5910 (jim_thompson5910):

the only angle of the 4 choices where this happens is PQT, so that's why the answer is A

OpenStudy (anonymous):

okay and what about number two?

jimthompson5910 (jim_thompson5910):

you are given triangle ABD = triangle CDB and you want to prove that triangle ABE = triangle CDE

jimthompson5910 (jim_thompson5910):

so how can you use what you're given to prove that triangle ABE = triangle CDE

jimthompson5910 (jim_thompson5910):

any ideas?

OpenStudy (anonymous):

So what you need to look at is what you need from the fact that triangle ABD=CDB

OpenStudy (anonymous):

So think of things that triangles ABE and CDE share with triangles ABD and CDB

OpenStudy (anonymous):

So do you need to know that <DCE=<BAE? No. how about <A=<C? No because it'l looking at the whole angle AD=BC? no, that's not in the triangle So the last one AB=CD is right because it will help you prove that triangle ABE=CDE

OpenStudy (anonymous):

Does that make sense?

OpenStudy (anonymous):

ohhh gosh im not smart -.-

OpenStudy (anonymous):

But do you get it?

OpenStudy (anonymous):

yes now i do

OpenStudy (anonymous):

Ok great! All you need is to practice similar problems multiple times, until you get the hang of it... A lot of these questions are just thinking logically, so you have to pay attention to details :-)

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