Respuesta :
Two pieces of stone carved into triangles is from the lower pal eolithic period.
What was the lower pal eolithic period?
This was the period that led to the development of pebble in the olden and ancient art period.
During this period of time the arts that were done were made from very sophisticated hand tools.
Read more on the Paleolithic period here: https://brainly.com/question/540822