1. AREA: the space inside a polygon.
AREA is measured in square feet, inches, miles, centimeters, meters, etc.

2. 1 2 3 4
Height = 3 feet 5 6 7 8 9 10 11 12
Base = 4 feet
Arearectangle = base x height
Area = feet x feet = square feet
Area = 4 feet x 3 feet = 12 square feet

3. A triangle is half of a rectangle.so
Area of a triangle is half the area of a rectangle.
AREAtriangle = bh or 1/2bh 2

4. AREAtriangle = 4 ft x 3 ft  2 = 6 sq ft
AREAtriangle = bh 2
NOTE: Height cannot be slanted!!!
Height = 3 feet
Base = 4 feet
AREAtriangle = 4 ft x 3 ft  2 = 6 sq ft