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Cylinder
Look at the figure of a cylinder.
l It has two plane faces (its top and base) and one curved
face. Both the plane faces of a cylinder are the same
shape and size.
l It has two equal curved edges where the curved face
meets with its plane faces.
l It has no vertex.
Cone
Look at the figure of a cone.
l It has one plane face (its base) and only one curved face.
l It has one vertex.
l It has one curved edge, where the
curved face meets with its plane face.
Sphere
The figure given is a sphere.
l It does not have any edge or vertex.
l It has a curved face.
l Half of a sphere is called a hemisphere. It has one curved
face, one plane face and one curved edge.
Keep in Mind
Solid shapes are also known as 3-dimensional (3-D) shapes. All solid shapes have a
surface and occupy space.
CombinATion of Solid ShApeS
In our daily life, most objects that we see around us are not made up of a single solid
shape. Instead, they are formed by combining two or more solid shapes such as a
cube, cuboid, sphere, cylinder, cone and prism.
for example: a. An ice cream is a combination of a cone and a
hemisphere.
b. A mace (gada) is the combination of a cylinder
and a sphere.
126 Mathematics 3
