You're viewing a single thread.
138
comments
Am I stupid or is one triangle unnecessary?
It is necessary. In the left triangle, the angle that is shown to be right is actually 80°, since other angles are 60 and 40, totaling 100.
That just means the drawing us wrong, because that is a right angle there
It's not wrong. It's just not right.
that's on purpose. it checks whether you actually verify information out just make assumptions. you're not supposed to eyeball things.
Without it, there wouldn't be any proof that the right angles are, well, 90°
One could actually argue you can't solve it unless you clearly define the bottom part to be straight.
You've viewed 138 comments.