Khan/khan-exercises — Issue #9493: Congruency postulates - Two answers option only -  both answers wrong
Author: KhanBugz
Created: 2011-12-25 13:55:32+00:00
State: open
Labels: ie8, ie9, win7, wrong-or-unclear

Reporter: mario.semialjac@googlemail.com

There was a streak of problems in this exercise (Congruency postulates) that worked fine (wheteher I got them right or wrong, in which case changing answer would move me on). But, on this problem and 3 or 4 previous problems (not immideatly before, it was like 1 in 5 ratio or maybe more) I am stuck. No matter what I answer (and as I can see answer here is yes) it is always wrong. In previous 3-4 issues i stayed with exercise, and played with dots changing answer constantly, until finally it gave me correct answer smiley (mind you, couple of time it wasnt even correct). But this happened only after 40-60 tries.
In this ptoblem I tried like 200 times with different answers, moving dots and shape all the time, but no luck - always wrong!
+ one thing - when you go out of exercise (which I was already deducted progress points for because of wrong answer) and get back in, on same problem I got yet another deduction of points (even though I was wrong previously on this same problem).
I don't know if other users are stuck with this one as well, but if they are, solving this will help them avoid lot of frustrating time.
Btw. this is the first exercise after probably 1000s of problems I gone trough that has issues.
So, on the bright side - overall technical quality of exercises is/was great so far. Thanks for that. :-)
Kind regards,
Mario

[congruency_postulates.html?seed=94&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/congruency_postulates.html?seed=94&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/congruency_postulates.html?seed=94&problem=0&debug&activity=%5B%5D)

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