Question

What is the name of the following shape?

(a) Cylinder
(b) Cone
(c) Circle
(d) Cube

Answer 1

Hint: In this type of question we have to use the concept of geometrical shapes. We know that, in geometry a shape is defined as an enclosed figure by the boundaries, the enclosed figure consists of lines, angles, points and curves. Also we know that there are basically two types of shapes: two dimensional and three dimensional. We can say that a two dimensional shape is also known as flat shape; they are drawn on the plane and have length as well as breadth.

Complete step by step answer:
Now we have to identify the following shape

Here, we can observe that, the given shape is a two dimensional, though it does not have length and breadth but it is a curve made up of points equidistant from a point situated at the centre.
We know that a circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “centre”.
Hence, the given shape is a circle.

So, the correct answer is “Option c”.

Note: In this type of question students must remember the definitions of all basic geometrical shapes. Also students have to note that the circle is the locus of all points at a fixed distance from a reference central point. Students have to know about the remaining shapes also which can be shown as follows:
Cylinder – We will define a cylinder as a three dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance.

Cone – We can define a cone as a three dimensional geometry that has a flat surface and a curved surface, pointed towards the top.

Cube – We can define a cube as a three dimensional solid which has six square faces, with three meeting at each vertex.