diff --git a/year25/day9/part2.go b/year25/day9/part2.go
index 72f1758..71565c5 100644
--- a/year25/day9/part2.go
+++ b/year25/day9/part2.go
@@ -79,7 +79,7 @@ func isP1InsideP2(p1, p2 []Vertex) bool {
 	for _, rectangleVertex := range p1 {
 		corner := rectangleVertex.Start // for each point of retangle
 		// check if corner is on vertex. if yes we are fine
-		// count vertexes
+		// count vertices
 		verticesPassed := 0
 		for _, v := range p2 {
 			if isPointOnLine(corner, v) {
@@ -102,11 +102,9 @@ func isP1InsideP2(p1, p2 []Vertex) bool {
 func isPointOnLine(p geometry.Point, l Vertex) bool {
 	v := p.Subs(l.Start)
 	w := l.End.Subs(l.Start)
-
 	if v.Line*w.Col != v.Col*w.Line {
 		return false
 	}
-
 	return w.Dot(p.Subs(l.End)) <= 0
 }
 func polygonsIntersect(p1, p2 []Vertex) bool {