[Children chattering]

In animation, a teacher in front of a class says QUIET DOWN, CLASS.
TODAY, WE'RE GOING TO LEARN
ABOUT SHAPES.
HEY, I'VE GOT A SHAPE JOKE FOR
YOU.
WHAT DO YOU CALL A CRUSHED
ANGLE?
A RECTANGLE.
GET IT?
A WRECKED ANGLE?
[Chuckling]

The teacher laughs and says UH, NO?
UH, NOTHING?
WELL, UH, LET'S JUST WATCH THE
VIDEO THEN.
[Music playing]

A song plays that says POLYGONS ARE SHAPES WITH
STRAIGHT LINES
POLYGONS CAN
HAVE MANY SIDES
AND THE FIRST ONE WE'LL LOOK
AT HAS THREE
IT'S A TRIANGLE
PLEASE LISTEN TO ME

An animated penguin says YES, THERE ARE THREE MAIN
TYPES OF TRIANGLES.
AN EQUILATERAL TRIANGLE HAS
THREE SIDES OF EQUAL LENGTH.
AN ISOCELES TRIANGLE HAS TWO
SIDES OF EQUAL LENGTH AND A
SCALENE TRIANGLE HAS NO EQUAL
SIDES.

The song continues OH, WAIT, NOW, THERE'S SO
MUCH MORE
A QUADRILATERAL HAS SIDES
YEAH, FOUR

The animated penguin says ANY SHAPE WITH FOUR SIDES OF
ANY LENGTH IS A QUADRILATERAL.
A PARALLELOGRAM IS A
QUADRILATERAL BUT HAS OPPOSITE
SIDES PARALLEL WITH EACH OTHER
LIKE A SQUARE, A RECTANGLE AND
EVEN A RHOMBUS.

The song continues THERE ARE ALSO FIVE AND SIX
SIDED SHAPES
AND THEN WE'RE DONE
I'M TALKING ABOUT A PENTAGON
AND A HEXAGON

The animated penguin says A PENTAGON HAS FIVE SIDES AND
A HEXAGON, A HEXAGON HAS SIX.
WITH BOTH SHAPES THE SIDES CAN
BE EQUAL OR NOT EQUAL IN LENGTH.
TAKE A LOOK!

The song continues POLYGONS
POLYGONS
POLYGONS
POLYGONS

(music plays)

The teacher says AND THUS CONCLUDES OUR LESSON
ON SHAPES, BUT I'M GONNA LEAVE
YOU WITH ONE LAST JOKE!
[Chuckles]

He says HERE IT IS, WHAT DID THE
STUDENTS SAY WHEN THEY SAW THE
EMPTY PARROT CAGE?
HUH?
THEY SAID, "POLYGON!"
[Chuckling]

He says POLYGON, GET IT, POL...
[Chuckles]
[Bell ringing]

He says says CLASS DISMISSED!
I'M HILARIOUS.
[Chuckling]
[Children laughing]

A caption reads "Copyright 2011, The Ontario Educational Communications Authority."