Explanation:

In programming, loops or repetitions are used to execute a set of instructions repeatedly until a specific condition is met. Similarly, in flowcharts, a loop symbol is also used to represent the repetition of a set of instructions until a specific condition is satisfied.

Flowchart Symbols:

Flowcharts are graphical representations of a process or algorithm. There are various flowchart symbols used to represent different elements or steps in a process. Some of the commonly used flowchart symbols are:

- Rectangle: It is used to represent a process or activity.

- Diamond: It is used to represent a decision point or condition.

- Oval: It is used to represent the start or end point of a process.

- Circle: It is used to represent a connector or a jump point.

Loop or Repetition Symbol:

The rectangle symbol in a flowchart is used to represent a loop or repetition. The rectangle symbol has rounded corners and is labeled with the keyword "Repeat" or "Loop." The loop symbol is used to repeat a set of instructions until a specific condition is met. The condition is usually represented by a decision symbol (diamond) that checks whether the condition is true or false.

Example:

Consider the following flowchart example:



In this flowchart, the rectangle symbol with the keyword "Repeat" is used to represent a loop. The loop repeats the process of adding two numbers until the sum is greater than 100. The decision symbol (diamond) checks whether the sum is greater than 100 or not. If the sum is greater than 100, the loop terminates, and the final result is displayed. If the sum is not greater than 100, the loop continues, and the process of adding two numbers is repeated.

Conclusion:

In conclusion, the rectangle symbol in a flowchart is used to represent a loop or repetition. The loop symbol repeats a set of instructions until a specific condition is met. The condition is usually represented by a decision symbol (diamond) that checks whether the condition is true or false.