What is the value of y?
Y-10
y+130
y+45°

“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 .

step-by-step explanation:

only stephen hawking would know.