Question
Add and Subtract
| $ $ |
$7 3$ | $ $ |
$ $ |
$4 8$ | $ $ |
$ $ |
$2 4$ |
| $−$ | $5 8$ | $ $ |
$+$ | $3 8$ | $ $ |
$−$ | $1 7$ |



There are ____________ standing lines, ____________ slanting lines and ____________ curved lines in the above design.