I think it’s 3,but I only get one try please help? And if it’s not 3 explain ?

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.

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10