Area of Irregular Shapes

Area of Irregular Shapes - Lesson

I can use properties to find the area of irregular shapes by breaking the shape into smaller parts.

Multiple Choice

How do you find the area of an irregular shape?

• add the lengths of all the sides

• divide the shape into rectangles, calculate the area of each rectangle then add the areas to calculate the area of the total shape

• multiply the lengths of all the sides

Poll

Is there another way to divide the desk into rectangles?

• Yes

• No

• I'm not sure

Multiple Choice

Now that the desk is divided into rectangles, what is the next step?

• add the length and width of the rectangles

• multiply the length and width of the rectangles together

• find the area of each rectangle

Fill in the Blank

What is the area of the yellow rectangle?

Fill in the Blank

What is the area of the white square?

Open Ended

We calculated the area of each rectangle. What is the next step?

Multiple Choice

What is the area of of Mrs. Williams' desk?

• 30 feet

• 26 square feet

• 30 square feet

• 26 feet