In 10-inch nonstick skillet, cook beef over medium-high heat 5 to 7 minutes, stirring frequently, until thoroughly cooked; drain. Stir in chilies. Spoon about 2 tablespoons mixture over half of each crust wedge to within 1/4 inch of edges. Top each with 1 tablespoon cheese. Brush edges of crust with water. Fold untopped dough over filling, forming triangle; press edges to seal. Place on cookie sheet.