We claim the ornamental design for a angle drill guide, as shown and described.
FIG. 1 is a top perspective view of an angle drill guide, showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a side elevation view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevation view thereof; and,
FIG. 6 is a rear elevation view thereof.
The broken lines immediately adjacent the claim represent the bounds of the claimed design while all other broken lines are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.