1. 5.2 Bisectors of Triangles Guiding Question: How can an event planner use perpendicular bisectors of triangles to find the best location for a firework display

2. Vocabulary Concurrent: when three or more lines intersect at one point. Point of concurrency: the point where the lines intersect in the triangle. Circumcenter of the triangle: the point of concurrency of the three perpendicular bisectors of a triangle. – Circumcenter Theorem: the circumcenter of a triangle is equidistant from the vertices of the triangle.

3. Vocab Continued Circumscribed: when a circle that contains all the vertices of a polygon is around the polygon. Incenter of a triangle: the point of concerrency where the angle bisectors of a triangle are concurrent. – Incenter Theorem: the incenter of a triangle is equidistant from the sides of the triangle.

4. Vocab continued! Inscribed: a circle inside a polygon intersects each line that contains a side of the polygon at exactly one point.

5. Page 311: 2-6 even, 10-14 even, 18