FIG. 1 is a perspective view of a circular saw embodying the present invention;

FIG. 2 is a rear view of the circular saw of FIG. 1;

FIG. 3 is a front view of the circular saw of FIG. 1;

FIG. 4 is a right side view of the circular saw of FIG. 1;

FIG. 5 is a left side view of the circular saw of FIG. 1;

FIG. 6 is a bottom view of the circular saw of FIG. 1; and,

FIG. 7 is a top view of the circular saw of FIG. 1.

The broken line showing of the environment is for illustrative purposes only and forms no part of the claimed design.