1. Geometry

2. 3 sides 4 sides 5 sides 6 sides 8 sides 9 sides 10 sides 12 sides triangle quadrilateral pentagon hexagon octagon nonagon decagon dodecagon

3. Geometry Interior angle sum theorem The sum of the measures of the interior angles of a convex polygon with n sides is (n-2)180 o.

4. Geometry The sum of the measures of the interior angles of a convex polygon with n sides is (n-2)180 o. n = 3 n-2 = 1 sum = 1*180 o = 180 o

5. Geometry The sum of the measures of the interior angles of a convex polygon with n sides is (n-2)180 o. n = 4 n-2 = 2 sum = 2*180 o = 360 o

6. Geometry The sum of the measures of the interior angles of a convex polygon with n sides is (n-2)180 o. n = 5 n-2 = 3 sum = 3*180 o = 540 o

7. Geometry The sum of the measures of the interior angles of a convex polygon with n sides is (n-2)180 o. n = 6 n-2 = 4 sum = 4*180 o = 720 o

8. Geometry Exterior angle sum theorem The sum of the measures of the exterior angles of a convex polygon, one at each vertex, is 360 o.

9. Geometry The sum of the measures of the exterior angles of a convex polygon, one at each vertex, is 360 o.

10. Geometry The sum of the measures of the exterior angles of a convex polygon, one at each vertex, is 360 o.

11. Geometry The sum of the measures of the exterior angles of a convex polygon, one at each vertex, is 360 o.

12. Geometry Pythagorean theorem The square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. a 2 + b 2 = h 2

13. Geometry a 2 + b 2 = h 2

14. Geometry a 2 + b 2 = h 2 3 4 5

15. Geometry 3 2 + 4 2 = 5 2 3 4 5

16. Geometry 9 + 16 = 25 3 4 5