Error Analysis

Question

"Below are two conclusions. Which is incorrect? Explain the error.

 

If two angles are complementary, their measures add up to 90°. If an angle measures 90°, then it is a right angle. <(pretend that's an angle sign)A and <B are complementary.

 

(A) <A and <B form a right angle

(B) m<A + m<B=90°"

So apparently I'm supposed to find the error and explain it im one if these two options, but, thing is, I still haven't found any error here??

The teacher was talking about inductives and deductives today if that helps the topic.

Answer 1

I'm not entirely sure, but I think the error is in (A). Angles A and B have the measures to add up to a right angle, but unless they are placed adjacent to each other, so that they share a side, they don't actually "form" a right angle.

 

That seems like a subtle point, but I can't see what else is wrong here.