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Chapter 10: Area

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Chapter 10:Area

Section 10-1:

Area of Parallelograms

and Triangles

- To find the area of a parallelogram.
- To find the area of a triangle.

- Base of a Parallelogram
- Altitude of a Parallelogram
- Height of a Parallelogram
- Base of a Triangle
- Height of a Triangle

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

A = bh

height

base

- The area of a parallelogram is the product of its base and its height.

A = bh

height

base

- A base of a parallelogram is any of its sides.
- The corresponding altitude is a segment perpendicular to the line containing that base, drawn from the side opposite that base.
- The height is the length of the altitude.

- Find the area of the parallelogram:

- Find the area of the parallelogram:

- Find the value of x.

x

3

4

8

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

- A base of a triangle is any of its sides.
- The corresponding height is the length of the altitude to the base.

- Find the area of the triangle:

9

16

- Find the area of the triangle:

5

6