You can easily check if two angles are equal in GeoGebra, if you know how to draw your figure. 
     GeoGebra Instruction 1
Algebra     View     and         Graphics     View     under         View     in         Menu.         GeoGebra.         Angle(<Object>)
and replace <Object> with the name of one of the two points. Repeat for the         remaining point.         
Algebra View, so that you can see if         they’re equal or not.