Area & Perimeter

1. Area & Perimeter

2. Perimeter of a Square or Rectangle To calculate the perimeter of an object or space, you will need to add the sides. 2 + 4 + 2 + 4 = ________ 2 4

3. Perimeter of a Triangle We use the same method to calculate the perimeter of a triangle or any other shape.3 + 4 + 5 = ______ 5 3 4

4. Tricky Perimeters(Look carefully.) 3 You will need to remember which sides to add and the values for each side. 2 2 2 2

5. Area of a Square or Rectangle The area of a shape is determined by multiplying length x width. 2 x 4 = ______ 2 4

6. Area of a Square or Rectangle 2 x 4 = 8 2 4

7. Area of a Triangle Finding the area of a triangle is different. Area of a triangle = ½ (base x height) ***(Base x height) is the same as (length x width).*** 3 4

8. Area of a Triangle Sometimes it makes it easier to remember if you can imagine it like this: A triangle is half of a rectangle or square. This is because the base (4) x the height (3) would be the same as the length x the width of a rectangle. 3 4

9. Try to find the area and perimeter on these game websites. • Funbrain Area & Perimeter • Fence Me In! • Math Playground: Geometry