(music plays)

Charmain stands next to a wall touch screen with a definition of angles. She is in her twenties, with black hair in a ponytail. She wears earrings, a white shirt under a blue T-shirt with a print that reads "Home Work Zone."

She says HI, TVO
KIDS,
IT'S TEACHER
CHARMAIN HERE.
TODAY, WE'RE GOING
TO TALK ABOUT
ANGLES AND LEARN
ABOUT WHAT ANGLES ARE
AND HOW TO
IDENTIFY THE
THREE DIFFERENT
TYPES OF ANGLES.
SO ANGLES ARE
FORMED WHEN
TWO LINES
INTERSECT EACH OTHER
JUST LIKE THE EXAMPLE
THAT I HAVE HERE.
YOU CAN SEE
THAT THESE TWO LINES
KIND OF MEET EACH
OTHER IN
THE MIDDLE,
SO THEY INTERSECT.
OR WHEN TWO RAYS
MEET AT A
CENTRAL POINT.
SO I HAVE THESE
TWO RAYS HERE,
AND THEY
MEET RIGHT HERE
IN THE MIDDLE
HERE.
WHERE THOSE
TWO POINTS MEET.
SO THAT CREATES
AN ANGLE,
AND THESE
INTERSECTING LINES
CREATE ACTUALLY
SEVERAL
DIFFERENT ANGLES.
SO LET'S
TALK ABOUT
THE DIFFERENT
ANGLES
THAT
THERE ARE,
SO WE KNOW WHAT
THEY ARE.

She clicks on a top menu and right angles and the picture of a barn pop up.

She continues SO ONE OF
THE ANGLES THAT
WE NEED TO
KNOW, AND
PROBABLY THE FIRST
ONE WE SHOULD KNOW
ARE RIGHT
ANGLES.
RIGHT ANGLES
ARE ANGLES THAT
ARE EXACTLY 90
DEGREES,
AND THEY KIND
OF MAKE AN L SHAPE,
AND WE IDENTIFY THAT
L SHAPE BY PUTTING
A LITTLE
SQUARE RIGHT WHERE
THOSE TWO LINES
INTERSECT,
SO THAT WE
KNOW THAT IT'S
DEFINITELY 90 DEGREES
EXACTLY.
SO YOUR ANGLES
MIGHT LOOK LIKE
ANY DIRECTION,
IT DOESN'T MATTER,
AS LONG AS
IT'S
EXACTLY 90 DEGREES.
SO I HAVE THIS PICTURE
HERE AND
I SEE SOME
RIGHT ANGLES HERE.
DO YOU SEE
THEM TOO?

She marks the angles on the picture and continues I SEE ONE RIGHT
ANGLE RIGHT HERE
AND I SEE ANOTHER
ONE GOING IN
THE OTHER
DIRECTION OVER HERE
AS WELL, AND EVEN
THIS ONE
IS A HUGE
RIGHT ANGLE.
AND THOSE ALL MAKE
THOSE 90 DEGREES.
SO THAT'S A
RIGHT ANGLE, GOOD JOB.
AN ACUTE ANGLE IS
AN ANGLE THAT
IS LESS
THAN 90 DEGREES.
IT'S CUTE,
SMALLER,
LESS THAN
90 DEGREES,
AND SO IT COULD BE
JUST A LITTLE
LESS THAN
90 DEGREES,
OR QUITE A BIT LESS
THAN 90 DEGREES,
LIKE SOME OF THE
EXAMPLES OVER HERE.
LET'S SEE IF WE
CAN FIND SOME
ACUTE ANGLES IN THE
PICTURE OF MY SHED HERE.
WELL, I SEE AN ACUTE
ANGLE RIGHT HERE,
AND I EVEN
SEE ONE HERE.
SO THOSE ARE
DEFINITELY
LESS THAN
90 DEGREES.
THERE'S A FEW
OTHERS, TOO.
LET'S LOOK AT
OUR THIRD ANGLE.

A definition reads "An obtuse angle is greater than 90 degrees."

She continues SO I CAN SEE
SOME OF MY EXAMPLES,
YOU CAN SEE IT'S
MUCH WIDER THAN
THOSE OTHER
ANGLES THAT WE'VE
BEEN LOOKING
AT.
LET'S SEE IF
WE CAN IDENTIFY
SOME IN THE PICTURE
OF MY SHED.
WELL I SEE
THIS ANGLE HERE
IS DEFINITELY
QUITE WIDE.
SO THAT'S
DEFINITELY
AN OBTUSE
ANGLE,
AND EVEN THIS ONE
ON THIS SIDE, TOO.
DEFINITELY WIDER,
MUCH BIGGER
THAN
90 DEGREES.
SO I WOULD
DEFINITELY
THINK THAT'S AN
OBTUSE ANGLE.
GOOD JOB.
SO THREE ANGLES WE
HAVE TO REMEMBER.
A RIGHT ANGLE IS
EXACTLY 90 DEGREES,
AN ACUTE ANGLE IS LESS
THAN 90 DEGREES,
AND AN OBTUSE
ANGLE IS GREATER
THAN 90
DEGREES.
NOW YOU'VE GOT
IT, TVO KIDS.
BYE!