HOW MANY SIDES ARE ON THIS TRIANGLE NEED HELP ASAP

I need to figure out the area of the pyramid but first I need to know how many sides are there. I would mark Brainly.com if someone tells me the area and explains, but most importantly I need how many sides are there.

HOW MANY SIDES ARE ON THIS TRIANGLE NEED HELP ASAP I need to figure out the area of the pyramid but first I need to know how many sides are there I would mark B class=