Question

If m∠1+m∠2=90 and m∠2=m∠3 then m∠1=m∠3=90
What property is this

Answer 1

One that doesn't make any sense.

Did you copy the last equation down correctly?

Answer 2

let me check

Answer 3

yupp

Answer 4

Did you copy *all* the equations down correctly?

Here's a proof of why the question doesn't make sense:
If m∠1+m∠2=90 and
m∠2=m∠3
Then
m∠3+m∠2=90

If m∠2=m∠3 and
m∠3+m∠2=90
Then
m∠3+m∠3=90

If m∠3=90 (see Given III) and
m∠3+m∠3=90
Then
90+90=90

...Which is false.

Answer 5

m∠1+m∠2=90 and m∠2=m∠3 then, m∠1+m∠3=90

Answer 6

Im asking for the Property as in transitive or reflexive so on and so on