Show that if g is connected with n > 2 vertices and n-1 edges that g contains a vertex of degree 1. hint: use the fact that deg(01) + + deg(n) = 2e

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%