| Shapes |
Name |
Sides |
Definition |
|
Triangle |
3 Equal Sides |
A geometric figure with three straight sides and three angles. Triangles can vary in
size and shape, and are categorized by their angles (acute, obtuse, or right) and by their sides
(equilateral, isosceles, or scalene). |
|
Square |
4 Equal Sides |
A four-sided polygon with all sides equal in length and all angles measuring 90
degrees. It is a type of rectangle and parallelogram, and is characterized by its symmetry and
regularity. |
|
Pentagon |
5 Equal Sides |
A five-sided polygon with five straight sides and five angles. It can be regular (all
sides and angles equal) or irregular. |
|
|
Star |
5 Equal Sides |
A star is a luminous spheroid of plasma held together by self-gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth make them appear as fixed points of light. |
|
Hexagon |
6 Equal Sides |
A six-sided polygon with six straight sides and six angles. Hexagons are found in
nature in the form of honeycomb cells and some crystals. They are used in various man-made
structures and designs due to their efficient packing properties. |
|
Heptagon |
7 Equal Sides |
A seven-sided polygon with seven straight sides and seven angles. Heptagons are less
common in everyday geometry but appear in some architectural designs and can be found in nature,
such as in certain types of plant leaves. |
|
|
Octagon |
8 Equal Sides |
An eight-sided polygon with eight straight sides and eight angles. Octagons are
frequently used in architecture and design, such as in the shape of stop signs and certain
buildings. |
|
|
Nonagon |
9 Equal Sides |
A nine-sided polygon with nine straight sides and nine angles. Nonagons are less
common in everyday geometry but appear in some decorative patterns and architectural designs. |
|
|
Decagon |
10 Equal Sides |
A ten-sided polygon with ten straight sides and ten angles. Decagons are used in
various contexts, including geometry, architecture, and design. |
|
|
Undecagon |
11 Equal Sides |
An eleven-sided polygon with eleven straight sides and eleven angles. Undecagons are
less common and are primarily studied in mathematical contexts. |
|
|
Dodecagon |
12 Equal Sides |
A twelve-sided polygon with twelve straight sides and twelve angles. Dodecagons can be found in certain architectural designs and decorative patterns. |