This is the 1464th most frequent Turkish word.
attığı
"Attığı" means "that (he/she/it) threw" or "that (he/she/it) has thrown."
In this sentence, 'attı' refers to the action of throwing something physically, specifically the ball into the garden.
O, topu bahçeye attı ki çocuklar oynasın.
He threw the ball into the garden so that the children could play.
Here, 'attığı' modifies 'adımlar' indicating the steps someone took to finish the course, showing possession and completion.
Attığı adımlarla parkurun tamamını geçti.
With the steps he took, he completed the entire course.
In this usage, 'attığı' describes the photos taken during the trip, referring to shooting or taking photographs metaphorically associated with an action.