One type of power tool is a circular saw, which allows you to cut through a variety of materials quickly and precisely. These tools can be corded, but they can be cordless as well. The choice depends on which you think is more convenient for your task.
Corded tools are often more powerful, but more DIYers prefer cordless circular saws because they are convenient and you can take them anywhere you want.
While all circular saws can cut straight lines on a surface or object, you should ensure that you have purchased a good saw and blade. Ambler Direct gives you Precision Power Circular Saw from Triton, which has a powerful 2000-watt motor and accurate trimmer.