Areas of Parallelograms and Triangles

1
Areas of Parallelograms and Triangles

• Section 5.2

2
Definitions

• Base- any side can be a base of a parallelogram
• Altitude- segment perpendicular to the line
  containing the base drawn from the side opposite
  the base
• Height- length of the altitude

3
Theorem 5-2

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

h
-----------B-------------
4
Theorem 5.3

• The area of a triangle is half the product of any
  base and the corresponding height.

h
------------------------B---------------------
5
Homework

• Day 1 Page 252 1 15
• Day 2 Page 252 16 18 (In class),
• 25-27, 34, 36
• Page 255 1 - 12