Alright, here we go.
I have just created a private account.
@ShadowInkPriv
I am not sure how much I will be posting there, it may be rather rarely, it may be around as active as here, Idk at all.
@barnabus__s Dass Israel überhaupt mitmachen durfte, ist eine Frechheit.
Russland wurde ja auch ausgeschlossen wegen der Ukraine, aber Israel nicht, oder was?
@Math_files I'd tell the teacher:
With that logic, sawing a board into 1 piece would take 5 minutes.
Well, we already have 1 piece (the whole board), and getting it does NOT take 5 minutes, given that we already have the board right in front of us.
@mathsrick_ Let x equal the missing angle. From the image, we know that (120°-x) + (70°-x) +x = 180°
Simplifying it, we get 190° - 2x + x => 190° - x = 180.
Add x and subtract 180° from both sides and we get x = 10°.
The missing angle is 10°.