1. Bellwork Add the special formula for the equilateral triangle below to your toolbox. Find the area of an equilateral triangle with a side of.

2. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.

3. Example 1 Find the apothem, perimeter and area of a regular nonagon with radius 5 ft to the nearest tenth.

4. Example 2 Find the apothem, radius and area of a regular pentagon with perimeter 60 cm to the nearest tenth.

5. Example 3 Find the area, perimeter and radius of a regular octagon with apothem 4 inches to the nearest tenth.

6. Homework 534 # 12, 14, 17 (a & c only) and worksheet Quiz NEXT Friday over 11.4-11.7

7. Bellwork w/partner ACT ABFG is a rectangle, BCDF is a square, BC = 6 inches, and E is the midpoint of. The length of is twice the length of. What is the area of trapezoid ABEG?

8. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.

9. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.

10. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.

11. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.

12. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.

13. Extra Credit Using the formula for a regular polygon and given that a side of an equilateral triangle is “s”, find the formula for the area of an equilateral triangle.