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.

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Geometry 4 Dec ) 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

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.

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

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

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

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

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

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 Equiangular Polygon Conjecture Each interior angle of an equiangular n-gon Polygons

Strategies? COLOR, resketch triangles separately

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!!

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