1. Area and Perimeter By Amar Marouf

2. Perimeter The sum of the lengths of all sides of the figure.

3. Area The number of square units inside a figure

4. Calculating Area

5. Area Abbreviations: A = Area b = base h = height

6. Rectangle To find the area multiply the length of the base times the height. Book 20 cm 10 cm Perimeter: 50 cm Area: 200 square cm 20 cm

7. Rectangle A = b x h

8. Parallelogram Draw a rectangle on graph paper. Cut off a triangle on one side and add it to the other. 12 3 Tic hue box My sister’s kite 10 cm 5cm 10 cm Perimeter: 30 cm Area: 50 cm 10 cm 5 cm Perimeter: 20cm Area: 50cm

9. Parallelogram The rectangle becomes a parallelogram so the formula is the same as for a rectangle

10. Triangle The area of a triangle is one half of the length of the base times the height

11. Triangle 4in Perimeter: 12 inch Area of the triangle is 8 sq.in. A = 1/2 bh A = 1/2 (4)(4) A = 8 sq. in. Cheese