1. VOCABULARY  Polygon  Concave  Convex

2. 4.7 POLYGONS AND ANGLES Integ. Math

3. POLYGON- SUM THEOREM

4.  A parking lot is in the shape of polygon with 6 sides. A surveyor measures 5 angles. They measure: 56, 84, 138, 165, and 150. What is the measure of the remaining angle.  A playground has the shape shown in the figure. A surveyor measures 6 of the angles of the playground. Find the unknown measure. x 123 118 130 144 124 139

5. POLYGON- EXTERIOR ANGLE THEOREM  The sum of the measures of the exterior angles of a convex polygon, one angle at each vertex, is 360°

6.  Find the measure of each interior angle of a regular nonagon(9- sided polygon). Then find the measure of each exterior angle of a regular nonagon.  Find the measure of each interior angle of a regular octagon. Then find the measures of the exterior angles.

7. HOMEWORK  Pg. 180-181 #1-21, 29-32