Non-congruent Interior Angles

This picture is of the album Master of Puppets by Metallica. If you look close enough on the two top corners, multiple string are attached to the crosses. This causes alternate interior angles, yet these one are not congruent. If this is to hard to see, then for a bit of help look toward the white line, crossing the bright yellow line to form angles. The black semicircles show the angles, in this case alternate interior.

These angles are not congruent because the two white lines are not parallel. The two have already crosses at the top of the picture. This picture is the album cover of the album "Master of Puppets". This relates back to the music industry because Metallica is a hard rock/ metal band.
I found this picture on the internet.
(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiuXb01pamQ7aH6vwF_QjtfGV0PVXKnU6iTll7C1_YbltNTfuxmEwlOJsYvm2vYBcEgsv-e5_d04tk0USaacsB3o5zZWN6lLs6E-_uzw7jz6EVya5-1B8BacHtV3Uk9-Pe3dIF698yhLH6s/s1600/master