To solve triangle mathematic problem

Well, it takes me not so quick or even not possible without the the help of GeoGebra to solve the problem that to find out angle x as in this pic http://s10.postimg.org/md51ek5kp/geomet.gif

 

user3523

 
Resource Type
Activity
Tags
angle  triangle 
Target Group (Age)
19+
Language
English (United States)
 
 
GeoGebra version
4.2
Views
789
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