2 3.4 Polygon Angle Sum Theorems 10/28 with practice on 10/29
3 Learning TargetsI can name and classify a polygon given the number of sides and vertices.I can find the interior angles of a polygon using the Polygon Angle Sum TheoremI can find the exterior angle of a polygon using the Polygon Exterior Angle Sum Theorem
4 Polygon : a polygon is a closed plane figure with at least three sides that are segments. The sides intersect only at their endpoints.
15 In your groupsThe sum of the measures of the interior angles is How many sides does it have?Hint: Work backwards
16 Polygon Exterior Angle Sum Theorem: The sum of the exterior angles of a polygon is 360 degrees. ALWAYS!
17 The following is SUPER IMPORTANT!!! An Equilateral polygon has all sides congruent.An Equiangular polygon has all angles congruent.The following is SUPER IMPORTANT!!!A regular polygon has all equal angles and equal sides.
18 In your groupsWhat is the measure of an exterior angle of a regular hexagon?What is the measure of an interior angle of a regular dodecagon?
19 In your groupsThe following is a regular polygon, find the missing measures
20 In a regular polygon, the sum of an interior angle and exterior angle is 180°