How many sides and corners do different polygons have?
Shape Town's Secret
How many sides and corners do different polygons have?
Welcome to a quiet little town where the shapes live. Every shape here keeps two things in its pockets: sides (the straight edges) and corners (the pointy spots where two edges meet). And here's the magic trick that runs the whole town — for any flat shape with straight edges, the number of sides and the number of corners are always exactly the same. Let's go meet them.
First up: the triangle, the smallest member of the club. You can't make a closed shape out of straight lines with fewer than three. Try it with two — they just lean against each other and leave a gap. So the triangle is the champion of "as simple as it gets": three sides, three corners.
