Areas of Parallelograms and Triangles

1
Section 7-1

• Areas of Parallelograms and Triangles

2
Area of a RectangleTheorem 7-1

• The area of a rectangle is the product of its
  base and height.
• Abh

h
b
3
Area of a parallelogramTheorem 7-2

• The area of a parallelogram is the product of a
  base and the corresponding height.
• Abh

The base of the parallelogram is any of its
sides. The height or altitude is a segment
perpendicular to the base from the side opposite
the base.
h
b
4
Area of a triangleTheorem 7-3

• The area of a Triangle is half the product of a
  base and the corresponding height.
• A1/2 b h

The base of the triangle is any of its sides. The
height is the length of the altitude drawn to the
base.
h
b
5
HOMEWORK

• Page 351
• 2-12e, 16-22e, 26-32e, 36-50e