The answer is 29. If you look at the triangle on top of it, with the obtuse angle being 122 you can see that that triangle and DEF are the same. And because the degrees of a triangle is always 180 you can subtract 122 from 180:
180
-122
That equals 58 and because there are two sides we need to divide 58 by 2:
58/2
this equals 29 so
z = 29
:)
The 3 significant causes to World War 1 would be:1. Treaty of Versailies, which forces Germans into accepting Full Blame for WWI. 2.This caused Germany to lose a lot of its lands. 3. Forced them to pay restitution for war dameges to countries like France, and Great Britain ect. 4. (just for the info) This made their leader very angry and it started a whole new perspective upon the nations view point.
C. Both A and B is the correct answer
