How can i connect two lines so they will apear as one, with "elbow"?

Hi danezeq,

all what you want is working by using the Align panel and the Pathfinder panel with its Join function.

For alignment you are working with a key element that will stay put during alignment. You have to decide which of the two items should be the key object.

One thing is important:

To properly align the two graphic lines you have to set the stroke weight of both graphic lines to value 0.

Read through this first:

https://helpx.adobe.com/indesign/using/aligning-distributing-objects.html

In detail:

Select both elements.

Click one of the two again to define the key object for alignment.

( Best do this with the "rotated" element )

Set the stroke weight of your selection to zero.

Align horizontally using the Align panel.

Align vertically by using the Distribute Vertical button with 0 distance.

Join the two paths.

Apply your stroke weight.

Regards,
Uwe Laubender

( ACP )