Can someone help me I need this is less then 10 mins because I’m timed

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.

Acircle has a circumference of 28.36 units what is the diameter of the circle

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4