Which of the following are two-dimensional diagrams ? Select the correct answer from codes given below :
(a) Bar Diagram
(b) Pyramid Diagram
(c) Pie Diagram
(d) Rectangular Diagram
(e) Unit Squares Diagram
(f) Spherical Diagram
Codes :

Question

Which of the following are two-dimensional diagrams ? Select the correct answer from codes given below : 
(a) Bar Diagram 
(b) Pyramid Diagram 
(c) Pie Diagram 
(d) Rectangular Diagram 
(e) Unit Squares Diagram 
(f) Spherical Diagram
Codes :

Accepted Answer

Here's a detailed explanation justifying why Option 2 is the correct answer and why the other options are incorrect:

**Why Option 2 (c, d and e) is Correct:**

*   **(c) Pie Diagram:** A pie diagram (or pie chart) is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. It represents data as parts of a whole, and it is drawn on a flat surface, making it a two-dimensional representation.

*   **(d) Rectangular Diagram:** A rectangular diagram, such as a rectangle chart or a treemap, uses rectangles of varying sizes to represent data. The area of each rectangle is proportional to the value it represents. These diagrams are inherently drawn on a two-dimensional plane.

*   **(e) Unit Squares Diagram:** A unit squares diagram uses squares of equal size to represent data, where the number of squares corresponds to the quantity being represented. These squares are arranged on a flat surface, making it a two-dimensional representation.

**Why Other Options are Incorrect:**

*   **Option 1 (b, c, d and e):** This option includes 'b' (Pyramid Diagram). Pyramid diagrams, while often drawn on a flat surface, represent hierarchical data in a three-dimensional structure. The pyramid shape itself implies depth and volume, even if visually represented in 2D. Therefore, it's not strictly a two-dimensional diagram.

*   **Option 3 (b, d and e):** This option includes 'b' (Pyramid Diagram) which, as explained above, is not strictly a two-dimensional diagram.

*   **Option 4 (d, e and f):** This option includes 'f' (Spherical Diagram). A spherical diagram represents data on the surface of a sphere. While it can be projected onto a 2D surface, the underlying representation is three-dimensional. Therefore, it's not a two-dimensional diagram. Also, it does not include 'c' (Pie Diagram) which is a two-dimensional diagram.

In summary, only Pie Diagrams, Rectangular Diagrams, and Unit Squares Diagrams are inherently two-dimensional representations, making Option 2 the correct choice.