Slicing 3D Shapes Video Lecture | Mathematics (Maths) Class 7 (Old NCERT)

math shirts slicing solid
three-dimensional figures results in
different two-dimensional shapes
depending on how you slice them if you
cut through a cylinder with a geometric
plane parallel to the cylinders base the
two-dimensional cross-section is a
circle any way you slice it you can get
two-dimensional shapes from
three-dimensional figures when you slice
a cylinder from top to bottom that is
perpendicular to its base then look at
the cross-section straight on you get a
rectangle what happens when you slice a
square pyramid if you slice across the
pyramid with your plane parallel to the
pyramids base the cross-section is a
square if you slice with your plane
perpendicular to the pyramids base the
cross-section is a triangle
remember you're slicing a solid
three-dimensional figure with a
geometric plane you can slice in any
direction just keep in mind that shapes
can look different when you look at them
from different angles so orient the
cross-section on the geometric plane
slicing diagonally can produce different
shapes such as an ellipse or a trapezoid
understanding the two-dimensional shapes
that result from slicing solid
three-dimensional figures is important
for geometry and ninjas