1. Bell Work What is a centroid? What is a circumcenter?
What is an incenter?
The ________ is the same distance from all sides of a triangle.
The ____________ divides the medians of a triangle into a 1:2 ratio.
The ______ is the same distance from all the vertices of a triangle.

2. 5-1 through 5-4 Recap
Rigor: Identify and apply theorems about perpendicular bisectors, angle bisectors, medians and midsegments.
Relevance: center of gravity and indirect measurement

3. Review Problems: Solve for the variables1) 2) A C B D
4y - 7
2y + 5
5x – 15
3x + 1
7x – 11

4. Review Problems continued
Use a straight edge to draw an acute triangle and construct the angle bisectors of the triangle. What is the point of concurrency called?
Use a straight edge to draw an obtuse triangle and construct the perpendicular bisectors of the triangle. What is the point of concurrency called?

5. Review Problems final
5) XA = 10. What is AB & XB? 6)

6. Finishing 5-3 & 5-4 Notes Example: Coordinate Geometry

7. Ex: Center of Gravity
To the below are plans for a triangular piece of a mobile. Where should the support be attached so the mobile is balanced?

8. Heading: 5-3 & 5-4 Classwork
Geometry
Textbook pg 329 #3 – 7, 28
Textbook pg 336 #3 – 9, 21, 22
Geometry Honors
Textbook pg 328 #3, 28 – 32
Textbook pg 336 # 6 – 8, 17 – 22
Quiz Thursday/Friday on 5-1 through 5-4

9. 5- 3 & 5-4 Homework From Core Book
Geometry
5-3 pg 209 #1 – 4, pg 210 #1 & 2
5-4 pg 213 #1 – 9, pg 214 #1 & 2
Geometry Honors
5-3 pg 209 #1 – 4, 8, 9; pg 210 #1 & 2
5-4 pg 213 #1 – 6, 10; pg 214 #1 & 2
Due Thursday for periods 1, 3, 5
Due Friday for periods 2, 4, 7