Geometry is the branch of mathematics that describes
shapes.
Geometry can be divided into:
Plane Geometry is about flat shapes like lines, circles and
triangles ... shapes that can be drawn on a piece of paper.
Solid Geometry is about three dimensional objects like cubes,
prisms, cylinders and spheres.
There are two main types of solids,
"Polyhedra", and "Non-Polyhedra":
A polyhedron is a solid with flat faces (from Greek
poly- meaning "many" and -edron meaning "face").
Non-Polyhedra is a solid, witch any surface is not
flat
Sphere: A sphere is a perfectly round geometrical object in
three-dimensional space, such as the shape of a round ball.
The shape of the Earth is very close to that of an
oblate spheroid, a sphere flattened along the axis from pole to pole such that
there is a bulge around the equator.
Hexagons: Hexagons are six-sided polygons, closed,
2-dimensional, many-sided figures with straight edges.
For a beehive, close packing is important to maximise
the use of space. Hexagons fit most closely together without any gaps; so
hexagonal wax cells are what bees create to store their eggs and larvae.
Cones: A cone is a three-dimensional geometric shape that
tapers smoothly from a flat, usually circular base to a point called the apex
or vertex.
Volcanoes form cones, the steepness and height of
which depends on the runniness (viscosity) of the lava. Fast, runny lava forms
flatter cones; thick, viscous lava forms steep-sided cones.
Parallel lines: In mathematics, parallel lines stretch to infinity,
neither converging nor diverging.
These parallel dunes in the Australian desert aren't
perfect - the physical world rarely is.
Fibonacci spiral: If you construct a series of squares with lengths
equal to the Fibonacci numbers (1,1,2,3,5, etc) and trace a line through the
diagonals of each square, it forms a Fibonacci spiral.
Many examples of the Fibonacci spiral can be seen in
nature, including in the chambers of a nautilus shell.
Watch the video to know how to draw
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