Medians and Centroid A median of a triangle is a line segment that is drawn from the _________ to the ___________ of the opposite side. A centroid is the point where all ______ of the ________ intersect.

Angle Bisector and Incenter An angle bisector in a triangle is drawn from the ________ to the opposite side (not necessarily the middle) so that the _______ is cut in _______. The incenter is the point where all _____ of the _________________ intersect.

Perpendicular Bisector and Circumcenter A perpendicular bisector of a triangle is a segment drawn from the _________ of the side and is ______________ to that side. A circumcenter – is the point where all 3 _________________ ____________

Label each segment as a median, angle bisector, or perpendicular bisector. 1. 4. 2. 5. 3. 6.

Classwork Construct the centroid, circumcenter, and incenter for each triangle. Use centimeters when measuring and LABELING the side lengths LABEL how many degrees each angle of the triangle is.

Major and Minor Arc Review A ___________ has more than 180o A _____________ has less than 180o A ____________ is named with 3 letters A______________ is named with 2 letters. Arcs are measured by their _____________

Label each major and minor arc and find its measure. G 300o 110o B E C J F 155o H K