Name the property that justifies the statement. 10y2-0=0

Im not really sure but here is what the internet said

Solve for y??

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .