1. Perimeter and Area of Rectangles, Squares, and Triangles

2. (Vocab section of your binders!!)
Perimeter and Area
Vocabulary
(Vocab section of your binders!!)
Perimeter ~ The distance around a polygon, or shape.
Area ~ The number of square units needed to cover a given surface. We measure area in square units.

3. To find the perimeter, add up all of the sides.
2 cm
3 cm
4 cm
3 cm
3 cm
5 cm
8 cm
8 cm
3 cm
3 cm
5 cm
3 cm
3 cm
4 cm
3 cm
3 cm
2 cm

4. Perimeter
Even if the value of the side is not given, use what you know to solve for the perimeter.
5 cm
10 mm
4 mm
4 mm

5. Area of Rectangles Area = length • width A = l • w
Use this formula to find the area of a rectangle.
2 m
7 m
6 m
1 m
3 m
5 m

6. Area of Triangles Area = ½ • base • height A=1/2bh 2.9 cm 13.2 km

7. Area of Parallelograms
Area = base • height A = bh
6.2 m
9 m
4.7 m
7 m