Symmetry in Nature Video Lecture | Mathematics & Pedagogy Paper 2 for CTET & TET Exams - CTET & State TET

hello friends this video on symmetry
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symmetric in nature now as I mentioned
before also that when you absorb things
around you you will see that a lot of
things in nature have symmetry so one
such example is a butterfly so when you
look at a butterfly which obviously
looks very pretty and beautiful but the
butterfly also has a symmetry in it so
this is how the basic structure of a
butterfly is and then you look at a
butterfly from this line what would you
see that though the left half and the
right half of the butterfly are exactly
identical to each other and if you
imagine that this butterfly is drawn on
a piece of paper it's just as room in
that case if you try to for it the piece
of paper along this line you would see
that the two halves we've covered each
other completely so we can say that
butterfly the structure of a butterfly
has symmetry in it similarly look at a
flower bus so the flower box also has a
symmetry so I have also drawn the lines
along which it is it has symmetry so
that it becomes easier for you to
understand so here also if you try to
fold along this line so this half and
this half will go inside so it has
symmetry even the human face has
symmetry so when I look at the human
please if you look at it along this line
you see this side you have an eye the
silence you can have an eye nose it gets
divided into two identical halves lips
also get divided into two identical that
so you see the face itself is symmetric
so now whenever you want to visualize
symmetry do not visualize the actual
feelings of a person just visualize that
the place of a person is drawn on a
sheet of paper now if you draw a line
along this line and then if you try to
fold that sheet of paper will the two
halves completely overlap each other
yes that means it has symmetry so in
case of human fears they would overlap
and that is why human face is
symmetrical think of an insect like a
cockroach maybe so the cockroach also is
symmetrical you look at this line and
you see everything on the top is same as
everything on the bottom so the two
halves of that insects body is also
symmetrical so in nature there are a lot
of objects which share which objects and
living organisms which exist naturally
may be leaves flowers insects animals
human beings and we see that they have
there are so many things which are
symmetrical by itself so symmetry is
something which also exists in nature so
let's look at these two net pieces and
let's tell which of these has symmetry
now both of these are not exactly
identical there's slight differences in
them let's look at the first necklace
stooping this has symmetry so let's look
at the necklace along this line so if
you think of a line like this you see
that it divides the necklace into two
identical house such that they would
overlap each other completely so now I
don't say you to cut the necklace into
two halves so why I have separated them
is just to show you that the two halves
are exactly identical to each other so
now if you think that you you want to
fold the necklace along this line then
the two halves will cover each other
completely whereas in the second
necklace if you looked at it along the
same line you would see that these two
halves now the two halves which you can
this time they are not exactly identical
because you see that now this half has
some designs here which is missing in
this one so therefore then you will try
to overlap the two so these designs will
not have anything to overlap so
therefore this necklace does not possess
symmetry
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