Write the numbers given below which have only straight lines:
5
8
7
1
9
0
2
4
Answer (2)
To solve the problem of identifying numbers composed entirely of straight lines from the given set, we need to visually assess which digits consist only of straight lines.
Here are the steps to identify such numbers:
Look at Each Digit Separately: Evaluate each digit (5, 8, 7, 1, 9, 0, 2, 4) to see if they consist solely of straight lines.
Identify Straight Line Digits:
Digit '1' consists of straight lines only.
Digit '7' consists of straight lines.
Digit '4' consists of straight lines.
Exclude Curved Line Digits:
Digits '0', '2', '5', '8', and '9' all have at least one curved line.
Therefore, the numbers composed entirely of straight lines are 1, 4, and 7.
To draw pictures with straight lines using these numbers, you can create simple geometric shapes:
For '1': Draw a vertical straight line.
For '4': Draw an upper horizontal line connected to a vertical line, forming an upside down 'L', and then add a horizontal line midway.
For '7': Draw a horizontal line connected to a diagonal line going downward to the right.
These drawings can help in understanding the difference between straight and curved lines in digit formation.
The numbers from the list that consist only of straight lines are 1, 4, and 7. Digits such as 0, 2, 5, 8, and 9 contain curves and are not included. Therefore, only 1, 4, and 7 qualify as they are formed entirely of straight lines.
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