1. Area of Triangles and Trapezoids
#36

2. FYI
You can divide any parallelogram into two congruent triangles. So the area of each triangle is half the area of the parallelogram.
An altitude of a triangle is a perpendicular segment from one vertex to the line containing the opposite side. The length of the altitude is the height.

3. VOCABULARY

4. I DO (foldable)
A= ½ bh OR A=bh/2
A= ½ h (b + b)

5. I DO (foldable)
10 yd
4 ½ yd
6 yd
4.3 cm
6 cm
3 cm
10.5 cm

6. WE DO (notes)
1) Find the area of the trapezoid.

7. YOU DO (classwork) ADV Area Group Activities 2D Shape and Sort
Area and perimeter Match Up
Calculating Area of Figures Review
REG