1. Geometry 4 Dec 2012 1) Check HOMEWORK. 2) Place book and binder on your desk. 3) CORRECT Friday’s QUIZ IN A DIFFERENT COLOR State what you did incorrectly Correct your answer State why it is now correct FINISHED? rewrite your proof as a two-column proof

2. objective Students will apply polygon interior and exterior sum conjectures to find angle measures. Students will take notes, work collaboratively and present to the class.

3. Homework due Dec 4 5.1, pg 259: 3 – 8 5.2, pg. 264: 8 – 13, 16, 17 Need to take test and/or quiz: P2: Jordan, Vincent, Lizeth P3: Zach, Eliot P5: Dom, Jackie

4. DUE Friday, December 7 5.3: 1- 7,9 Study for quiz- proof/ polygon sums Finish 5.1 #12 handout KNOW vocab: median, altitude, midsegment, AIA, regular polygon,equilateral, equiangular, polygon sum conjecture, polygon equiangular conjecture work ahead: due Tuesday 5.4: 2, 3, 4, 7 5.5: 1, 2, 3, 5, 6 5.6: 11, 12, 13 QUIZ- proofs, polygon properties

5. altitude the perpendicular segment from a vertex to the opposite side or a line containing the opposite side

6. midsegment- the segment that connects the midpoints of two sides of a triangle midsegment

7. median- the segment connecting the vertex of a triangle to the midpoint of its opposite side median

8. Term Definition Example Polygon Sum Conjecture The sum of the measures of the interior angles of an n-gon is Sum of interior angles Exterior angle sum conjecture For any polygon, the sum of the measures of a set of external angles is 360 0 Equiangular Polygon Conjecture Each interior angle of an equiangular n-gon Polygons

9. Strategies? COLOR, resketch triangles separately

10. Practice- Angle Chase Calculate the measure of each lettered angle measure. Explain how you found your answer. Show brief calculation and relationship. Triangle Sum: a + b + 34 = 180 Quadrilateral Sum, LP, VA, CA, etc. Be ready to share a PART of the puzzle with the class!!

11. debrief what did you learn today? what was easy? what was difficult?