W7 l1
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Transcript of W7 l1
![Page 1: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/1.jpg)
Unit 4 Quadrilaterals and Polygons
![Page 2: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/2.jpg)
A polygon is a closed figure made by
joining line segments, where each line
segment intersects exactly two others.
![Page 3: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/3.jpg)
These are examples
of polygons.
![Page 4: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/4.jpg)
This, however, is not a polygon.
Why
not?
![Page 5: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/5.jpg)
It isn’t a polygon because it isn’t a
closed figure.
Now it’s a
polygon!
![Page 6: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/6.jpg)
This is not a polygon.
Why
not?
![Page 7: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/7.jpg)
This figure isn’t a polygon
because it is not made of line
segments.This is a
line
segment.
![Page 8: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/8.jpg)
This figure isn’t a polygon.
![Page 9: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/9.jpg)
This figure isn’t a polygon
because its sides do not intersect
in exactly two places each.
This line
intersects
with other
lines in 3
places.
![Page 10: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/10.jpg)
Hold up your left hand if you see a
polygon.
Hold up your right hand if you see
something that isn’t a polygon.
![Page 11: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/11.jpg)
![Page 12: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/12.jpg)
![Page 13: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/13.jpg)
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![Page 17: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/17.jpg)
![Page 18: W7 l1](https://reader033.fdocuments.in/reader033/viewer/2022051617/559614731a28abd8518b471c/html5/thumbnails/18.jpg)
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Let’s do page # 46 in your math books.
Look at the picture and write YES if you
see a polygon or NO if you don’t.