This is a GRE math question, but I heard I can get help here! Thanks in advance!
I do understand you can assume nothing from the diagrams. My question is on the principles.
Here is the question which I've inserted in three photos
part 1: https://docs.google.com/file/d/0B8G2...it?usp=sharing
part 2: https://docs.google.com/file/d/0B8G2...it?usp=sharing
part 3: https://docs.google.com/file/d/0B8G2...it?usp=sharing
My answer would have easily been C - that m and n are equal (the answer is D). I didn't assume that based on the pic. I assumed that because line AD and DC are equal. I thought that equal-sized lines had equal-sized angles. I'm getting this from all the rules on triangles and angles. For instance here:
https://docs.google.com/file/d/0B8G2...it?usp=sharing
Can anyone help me get this straight in my head? I feel like a lot of this stuff is just memorization, but I'd like to make valid connections.
I do understand you can assume nothing from the diagrams. My question is on the principles.
Here is the question which I've inserted in three photos
part 1: https://docs.google.com/file/d/0B8G2...it?usp=sharing
part 2: https://docs.google.com/file/d/0B8G2...it?usp=sharing
part 3: https://docs.google.com/file/d/0B8G2...it?usp=sharing
My answer would have easily been C - that m and n are equal (the answer is D). I didn't assume that based on the pic. I assumed that because line AD and DC are equal. I thought that equal-sized lines had equal-sized angles. I'm getting this from all the rules on triangles and angles. For instance here:
https://docs.google.com/file/d/0B8G2...it?usp=sharing
Can anyone help me get this straight in my head? I feel like a lot of this stuff is just memorization, but I'd like to make valid connections.
