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A polygon is a connected figure whose sides are line segments. Each endpoint of a side meets the endpoint of just one other side and no sides overlap.
The word polygon comes from the prefix poly (many) and the suffix gon (angles). So a polygon has many angles (or you could say many sides).
We often name polygons with letters. The letters are the names of the points at the shape's corners, or vertex points. When we say the name, we go around the shape. For example, this is triangle JKL. A triangle is a polygon with 3 sides (or we can say 3 angles).
We often name polygons with letters. The letters are the names of the points at the shape's corners, or vertex points. When we say the name, we go around the shape. For example, this is triangle JKL. A triangle is a polygon with 3 sides (or we can say 3 angles).
This is hexagon MNOPQR. A hexagon is a polygon with 6 sides.
A polygon is a regular polygon if all sides are the same length and all angles have the same degree measure. Hexagon ABCDEF is a regular hexagon.
Use the Measuring Polygon Angles pages in the Student Activity Book to explore measuring angles.