YOU'RE BLUFFING!

THE GRIM WREAKER ISN'T SYMMETRICAL!

YOU SURE ABOUT THAT, HACKER?

THERE ARE THREE KINDS OF SYMMETRY, YOU KNOW.

THERE'S SLIDE SYMMETRY - LIKE UH...DIDGE.

I NEED TWO COMBS.

LET GO OF ME, YOU NOODLEBRAINS!

HOLD 'EM HIGH, DIDGE.

TWO COMBS!

TAKE A LOOK, HACKER.

THE TEETH LINE UP.

EVERY TOOTH THE SAME - EVERY TOOTH THE SAME DISTANCE FROM EACH OTHER.

SLIDE THEM OVER UNTIL THE TEETH LINE UP AGAIN, AND YOU CAN'T TELL THAT THEY'VE MOVED.

WRONG, COMB-BOY!

THE GRIM WREAKER DOESN'T LOOK L HE'S RIGHT, MATTY.

GRAB THE GIRLS!

NOT SO FAST!

AND THEN THERE'S TURN SYMMETRY.

COULD THE WREAKER LOOK THE SAME WHEN YOU TURN IT PART WAY AROUND?

GUYS?

NOW WATCH CLOSELY AS WE CHECK FOR TURN SYMMETRY.

TURN THE WREAKER A QUARTER TURN... OR EVEN A HALF TURN...

DOES IT LOOK THE SAME?

WRONG AGAIN!

TURN IT A QUARTER TURN - A HALF TURN, WHATEVER YOU WANT - AND IT LOOKS TOTALLY DIFFERENT!

NO TURN SYMMETRY THERE AT ALL.

NOT EVEN CLOSE!

FIRE AWAY!

I WILL IF YOU WANT - BUT YOU'VE FORGOTTEN FLIP SYMMETRY.

IF YOU SLICE THE GRIM WREAKER DOWN THE MIDDLE - FROM FRONT TILL END, WILL ONE HALF LOOK LIKE THE OTHER FLIPPED OVER?

SLICE THE GRIM WREAKER DOWN THE MIDDLE?

DON'T LISTEN TO 'IM, BOSS!

HA.

LET 'EM BLAST IT!

NUTHIN'LL HAPPEN!

DON'T BE SO SURE, HACKER.

HERE'S THE GRIM WREAKER.

CUT IT IN HALF AND WHAT DO YOU SEE?

MIRROR IMAGES OF EACH OTHER.

FLIP SYMMETRY!

BALANCED AND PREDICTABLY ORDERED.

H-T-H, HACKER.

HOPE THIS HELPS.

DO THE MATH, HACKER.