How to classify each center as a circumcenter, incenter, centroid, or orthocenter

Classify each diagram as;
(1) Circumcenter
(2) Incenter
(3) Centroid
(4) orthocenter
Picture 7: CENTROID- Where the medians of all three sides meet, is called the centroid
Picture 8: INCENTER- the point at which the angle bisectors of all three angles meet/intersect
Picture 9: INCENTER- The point at which all three angle bisectors meet
Picture 10: CIRCUMCENTER- Where the perpendicular bisector meet.
Picture 11: CENTROID- Where the medians of all three sides intersect
Picture 12: CIRCUMCENTER- Where the perpendicular bisector meet.
Picture 13: INCENTER- The point at which all three angle bisectors meet
Picture 14:INCENTER- The point at which all three angle bisectors meet