Drawing projections - QUESTION

[carlost]

Hello everybody, new in the forum.

Hope you can help me with this basic doubt.
The attached pdf contains 3 options dimensioning the same part (formed channel)

Can you help me to idetify wich ones are correct or incorrect?

Thanks, appreciate your help!

[Kelly_Bramble]

First or third angle projection?

[Hudson]

my 2 cents:

Either 2 or 3 are correct third angle views. Two seems more comfortable.

The 2.50 can be eliminated as it is double dimensioning.

The 5.63 between the two views as on option 3 makes it easier to relate the dimension to front and side views.

There is no call out for the corner breaks.

[carlost]

Thanks for your replies.

All are 3rd angle projection.

I understand that option 1 is not correct.

Greetings!