We’re at the Polygons annual party. It’s polygons only so to get a ticket, you have to be a 2D shape, with straight sides.
Polygons can be grouped based the number of sides they have.
So let’s meet the different gangs…
Excellent showing from the quadrilaterals this year, they’re all the four-sided shapes with internal angles that total 360 degrees.
So who have we got here then?
Oh of course, the Square, hi. Rectangle, who you doing? Rhombus, always a pleasure. Parallelogram, charmed. Kite! Looking great. And Trapezium, what a legend.
Cheers guys, have a good time.
Now, it’s the Triangles. That’s three-sided shapes with internal angles that total 180 degrees.
Isosceles, scalene, equilateral and right-angled. See you later.
Urgh, uh hello. It’s the irregular polygons. This bunch have sides of different lengths and different angles.
They’re generally just quite, well, irregular. You guys enjoying yourselves? Hmm let’s move on, cheers all!
Now the party can really get started. Look who we’ve got here…
Pentagon, hexagon, heptagon, octagon and eh… who’s -? Circle!
Circle, you haven’t got any straight sides. You’re not a polygon are you?
Sorry but, them’s the rules. Go on, off you go.
Well, that was awkward.
Description
A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons have three or more sides. A circle is not a polygon because it doesn’t have straight sides. Polygons can be regular or irregular.
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