1. Objective: To find areas of regular polygons
11.3 Area of Regular Polygons
Objective: To find areas of regular polygons

2. Area Formulas Area of a square A = s2 A = b.h or A = l.w
Objective: To find areas of regular polygons
Area Formulas s
Area of a square
A = s2
A = b.h or A = l.w b h l
Area of a rectangle w h b
Area of a parallelogram
A = b.h
A = b.h b h
Area of a triangle

3. Area Formulas b1 b2 h A = h(b1+b2) Area of a trapezoid A = (d1)(d2)
Objective: To find areas of regular polygons
Area Formulas b1 b2 h
A = h(b1+b2)
Area of a trapezoid
A = (d1)(d2) d2 d1
Area of a rhombus d2 d1
A = (d1)(d2)
Area of a kite

4. Examples A = (9)(3) = 27 A = (5)(4) = 20 A = (15)(8) = 120
Objective: To find areas of regular polygons
Examples
A = (9)(3) = 27
A = (5)(4) = 20
A = (15)(8) = 120

5. Examples A = (6)(12) = 72 A = (9)(11) = 99 A = (10)(16) = 160
Objective: To find areas of regular polygons
Examples
A = (6)(12) = 72
A = (9)(11) = 99
A = (10)(16) = 160

6. Objective: To find areas of regular polygons
Examples

7. Objective: To find areas of regular polygons
Examples
A = 92 = 81

8. Objective: To find areas of regular polygons
Examples

9. Examples
Objective: To find areas of regular polygons

10. Examples
Objective: To find areas of regular polygons