218 GEOMETRY • NAMING POLYGONS
Naming
polygons
Polygons are named for the number of sides and
angles they have. Most polygons’ names come
from the Greek words for different numbers. Here
are some of the most common polygons.
REAL WORLD MATHS
Honey in hexagons
To store the honey they
make, some bees build
honeycombs from wax
made inside their bodies.
Honeycomb cells are
regular hexagons that fit
together perfectly to make
a strong, space-saving
storage unit for the honey.
3 sides and
3 angles
6 sides and
6 angles
10 sides and
10 angles
Regular heptagon
Regular triangle
Regular hexagon
Regular decagon
Irregular
heptagon
Irregular
decagon
Irregular
triangle
Irregular
hexagon
In a polygon, the
number of its sides is
always the same as the
number of its angles.
7 sides and
7 angles
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