Today Andrew and I continued working on the new vocabulary words. We reviewed the circumcenter is the intersection of the perpendicular bisectors, the incenter is the intersection of the angle bisectors, the orthocenter is the intersection of the altitudes, and the centroid is the intersection of medians. Andrew had a tough time today differentiating the 4 types. To clarify, I had Andrew draw several triangles in various shapes. We practiced drawing the perpendicular bisectors. I asked him every 2 minutes, "What is the name of the intersection of the perpendicular bisectors?" He answered, "circumcenter". My hope is that with repetition he will be able to memorize them. We did the same thing with the incenter, orthocenter, and centroid.