Calculating Area of Irregular Shapes

What is an irregular shape?

• A shape that can be easily calculated

• A shape with only straight sides

• A shape with equal sides and angles

• A shape with sides and angles of any size

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CCSS.1.G.A.1

CCSS.2.G.A.1

How do you start finding the area of an irregular shape?

• By calculating its volume

• By guessing the measurements

• By dividing it into familiar shapes

• By measuring its perimeter

Which method is used to find the area of irregular shapes?

• Dividing into smaller irregular shapes

• Using a formula for irregular shapes

• Dividing into smaller regular shapes

• Estimating the total area

What are the dimensions of rectangle number one?

• Length 4 cm, Width 6 cm

• Length 8 cm, Width 3 cm

• Length 6 cm, Width 4 cm

• Length 3 cm, Width 8 cm

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CCSS.3.MD.D.8

How is the area of rectangle number one calculated?

• Length + Width

• Length - Width

• Length / Width

• Length x Width

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the length of rectangle number two?

• 3 cm

• 4 cm

• 8 cm

• 6 cm

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CCSS.4.MD.A.3

How do you find the area of rectangle number two?

• Subtracting the lengths

• Multiplying length by width

• Adding the lengths

• Dividing length by width

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the base of the triangle?

• 3 cm

• 4 cm

• 6 cm

• 9 cm

How is the area of the triangle calculated?

• 1/2 x Base x Height

• Base x Height

• Base / Height

• Base + Height

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CCSS.6.G.A.1

What is the total area of the irregular shape?

• 12 cm squared

• 24 cm squared

• 42 cm squared

• 6 cm squared

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CCSS.6.G.A.1