If a reflection takes triangle cat to c′a′t′, what is a′c′? triangle cat with vertex a at negative 2 comma 1, vertex t at negative 1 comma 4 and vertex c at 0 comma 0, side at has a measure of square root of 10 units, side tc has a measure of square root of 17 units, and side ac has a measure of square root of 5 units 3 4 square root of 5 cannot be determined