Help! ASAP please! thank you so much in advance ​

Can you simplify 4/7? 24 points will be awarded!

Which of the following statements is not true? a.parallel lines are lines in the same plane that never intersect. b.congruent figures have the same shape and same size angles and sides. c.similar figures must have the same shape and the same size. d.a rotation is when you turn a figure around a certain point.

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]