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45-45-90 Triangles

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Uploaded by on May 15, 2007

Introduction to 45-45-90 Triangles

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LICENSE: Creative Commons (Attribution-Noncommercial-No Derivative Works).

For more information about this license, please read: http://creativecommons.org/licenses/by-nc-nd/3.0/.

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  • wow thanks that helped a lot and i got a big test tomorro haha

  • Of all the Math teachers I had in school, Miss R. and Mr. A. were the only ones who sounded interested in the subject they were teaching.

    Every time I got a teacher who wasn't interested, it was harder to do well in the course. For me.

    Sal is like that guy who went to Cornell and got a Ph.D. in Biomolecular Chemistry and Microbiology. Every time the guy told me about a scientific theory, he sounded interested.

    It helps if the teacher sounds like it's worth pursuing the subject.

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All Comments (47)

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  • Wish I could re-do my quiz now ...

  • screw yourteachermath khan academy FTW :D like! :)

  • This video was so helpful for me! Thank you so much!

  • this video helped me with my geometry basics and now i understand the pi/4 corrdinate in the unit circle 

  • @penguinx10 It's an equivalent expression, but I do think that he should mention that c=asqrt(2)=bsqrt(2)

  • Instead you should have just multiplied the 8 by root 2 to get the hypotenuse

  • nice video.

    now get a stylus and a trackpad

  • its so funny how i mastered this last year and this yr i cant remember but am okay now thanks to the internet. my teacher doesnt teach me nothing.

  • I'm watching this for my geo. test tomorrow,and I get it now!

  • This dont make sense

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