CK-12 Geometry-Concepts

http://www.ck12.org Chapter 10. Perimeter and Area

Vocabulary

Perimeteris the distance around a shape. The perimeter of any figure must have a unit of measurement attached to
it. If no specific units are given (feet, inches, centimeters, etc), write “units.”Areais the amount of space inside a
figure. Area is measured in square units. Aparallelogramis a quadrilateral whose opposite sides are parallel.

Guided Practice

Find the area of the following shapes.

2.

3. A parallelogram with a base of 10 m and a height of 12 m.

Answers:

1. Area is 15( 6 ) = 90 un^2.


2. Area is 32( 12 ) = 672 un^2.


3. Area is 10( 12 ) = 120 m^2.

Interactive Practice

MEDIA

Click image to the left for use the URL below.

URL: http://www.ck12.org/flx/render/embeddedobject/113019

Explore More

1. Find the area of a parallelogram with height of 20 m and base of 18 m.


2. Find the area of a parallelogram with height of 12 m and base of 15 m.


3. Find the area of a parallelogram with height of 40 m and base of 33 m.


4. Find the area of a parallelogram with height of 32 m and base of 21 m.


5. Find the area of a parallelogram with height of 25 m and base of 10 m.