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Playlist Polygons 22 videos

0
Polygons
5795 Views

Curious to find out what angle these guys are playing? Check out this video. You’ll have angles coming out of the wazoo.

1
Angles of a Polygon
2103 Views

We know what you came here for—you want to hear the latest interview with the hot starlet, Polly Gon. Well, we've got the scoop for you. She's re...

2
Exterior and Remote Interior Angles
6348 Views

Unlike anything that enters the Bermuda Triangle, Exterior angles can be found—in more than one way. This video covers how to use the remote inte...

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Polygons 5795 Views


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Description:

Curious to find out what angle these guys are playing? Check out this video. You’ll have angles coming out of the wazoo.

Language:
English Language

Transcript

00:00

Polygons, a la Shmoop. Farmer Polly at the Circle-P Farm needs to

00:11

build some pens for her exotic animals.

00:15

Polly doesn't want her animals to escape...

00:20

...so she needs to build the animal pens in the shape of polygons.

00:27

So what's a polygon?

00:28

A polygon is any closed figure with three or more straight sides. "Closed" means that

00:34

all sides connect together.

00:37

There are no gaping holes in it that the three-toed sloth could escape through... very... slowly...

00:43

These are not polygons: And no, a circle is not a polygon. It doesn't

00:48

meet all the requirements... don't forget about the straight sides.

00:53

Now these beauties, these are polygons. No animals are getting out of these bad boys.

00:58

The last time the land octopus and the wallabies got out, Polly had a litter of eight-legged

01:02

wallabies to round up.

01:04

Those things can kick like you wouldn't believe. Unless you live in a circular cave, you've

01:08

probably heard of triangles. Well, triangles are polygons with three sides.

01:13

What do you call a polygon with four sides? A quadrilateral....

01:19

Here are some key terms you should know: Angle: the shape formed when two rays meet

01:25

at a common point.

01:29

Vertex: the point where two rays meet; the corner point of a polygon. The plural

01:38

of vertex is vertices....

01:41

Side: the straight edge of a polygon. These are regular polygons...

01:48

...called equilateral and equiangular, which means all sides are equal length and all angles

01:57

are equal in measure.

01:59

Since they're regular, Polly will put all the regular animals in here: the crocodiles,

02:04

the giraffes, the fainting goats....

02:07

Trust us, compared to the rest of these animals, the fainting goats are pretty regular.

02:11

Now these suckers are not regular.

02:14

There could be a few reasons:

02:16

All sides are not equal.

02:18

All angles are not equal.

02:20

All sides and all angles are not equal. Nothing's equal. Not a thing.

02:25

This is where Polly will put those eight-legged kangaroos, the flying sloth, and the talking

02:29

donkey.

02:35

He's such a smart... well, let's just say he has quite a mouth on him.

02:39

Finally, there are convex and concave polygons. A convex polygon has no angles pointing inwards.

02:46

More precisely, no internal angles can be more than a hundred eighty degrees.

02:50

...So basically what the fence looks like when the bull moose gets angry.

02:55

If there are any internal angles greater than a hundred eighty degrees, then the polygon

02:58

is concave. Now you're ready to help Farmer Polly out

03:04

on the farm.

03:05

Don't worry, you won't have to milk the bovine-ocerus until you learn about volume and cylinders...

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