Ok so I'm confused on this because the triangles are congruent so that means they have the same measurement which would make WXY=17, but don't all triangles have total measures of 180 degress??
step 1 if ∡YWZ=17° then ∡XWZ=17°*2-----> 34°----> because triangle XWY and triangle YWZ are congruents
step 2 ∡WXY=∡WZY-------> because triangle XWY and triangle YWZ are congruents we know that the sum of the internal angles of a triangle is 180 degrees so 180°=∡XWZ+2*∡WXY---------> ∡WXY=[180-∡XWZ]/2 ∡WXY=[180-34°]/2-------> ∡WXY=73°
