1. Special Parts of Triangles Day 1 Please get: Activity 1 off the back table 8 pieces of patty paper Compass Protractor Scissors Glue stick Pencil

2. We are going to do: Activity 1 Activity 2 Excercises glue the projects in the new notebook you just made =) Take notes on the next slides

3. Inscribed circle is inside a triangle. The center of the circle is called the incenter and is the intersection of the triangle’s angle bisectors. The incenters are ALWAYS in the ‘middle’ of the triangle. The circle touches each SIDE of the triangle.

4. Circumscribed circle is outside of a triangle. The center of the circle is called the circumcenter and is the intersection of the triangle’s perpendicular bisectors. The circumcenter of an acute triangle is inside, in a right triangle it is on the side, and in an obtuse triangle it is outside. The circle touches each VERTEX of the triangle.

5. Special Parts of Triangles Day 2 Please get: 1 index card 1 patty paper Compass Straight edge Scissors Glue stick Pencil Make a large acute scalene triangle on the patty paper. Find the midpoint of each side. Trace it onto the index card Wait for me

6. Concurrency of medians The medians of a triangle are concurrent at the CENTROID which is two-thirds the distance from each vertex to the midpoint of the opposite side. The centroid is the center of gravity of the triangle. 1/3 EB 2/3 EB Interactive medians

7. Concurrency of Altitudes The altitudes are concurrent at the orthocenter of the triangle. The orthocenter is inside an acute triangle, on a right triangle, or outside of an obtuse triangle. Interactive altitudes