What is the perimeter of triangle ABC? 12 units 13 units 14 units 18 units Coordinate graph showing triangle A B C. Triangle A B C has vertex A at negative 2 comma 6, vertex B at 1 comma 2, and vertex C at negative 2 comma negative 2. Coordinate graph showing quadrilateral A B C D and quadrilateral I J K L. Quadrilateral A B C D has vertex A at negative 4 comma 6, vertex B at negative 4 comma negative 2, vertex C at negative 2 comma negative 2, and vertex D at negative 2 comma 6. Quadrilateral I J K L has vertex I at 2 comma 3, vertex J at 2 comma negative 1, vertex K at 3 comma negative 1, and vertex L at 3 comma 3. A scatterplot with an x axis labeled, variable A from zero to ten in increments of two and the y axis labeled, variable B from zero to one twelve in increments of two. There are fifteen points in the plot, which descend from left to right in a pattern approximating a line. Coordinate plane in the first quadrant. The x axis is labeled variable X and ranges from 0 to 10 in increments of 1. The y axis is labeled variable Y and ranges from 0 to 10 in increments of 1. The points on the graph are begin ordered pair 3 comma 1 end ordered pair, begin ordered pair 4 comma 0 end ordered pair, begin ordered pair 4 comma 2 end ordered pair, begin ordered pair 5 comma 1 end ordered pair, begin ordered pair 6 comma 0 end ordered pair, begin ordered pair 6 comma 1 end ordered pair, begin ordered pair 6 comma 3 end ordered pair, begin ordered pair 6 comma 4 end ordered pair, begin ordered pair 6 comma 6 end ordered pair, begin ordered pair 7 comma 3 end ordered pair, begin ordered pair 7 comma 5 end ordered pair, begin ordered pair 8 comma 7 end ordered pair, begin ordered pair 9 comma 9 end ordered pair, begin ordered pair 10 comma 7 end ordered pair, and begin ordered pair 10 comma 9 end ordered pair. A line is drawn through points begin ordered pair 5 comma 1 end ordered pair, begin ordered pair 6 comma 3 end ordered pair, begin ordered pair 7 comma 5 end ordered pair, begin ord