Finding the Area of Composite Figures with Triangles

What is the first step in finding the area of composite figures?

• Guess the total area based on experience

• Calculate the perimeter of the figure

• Separate the figure into simpler shapes

• Add the areas of all shapes together

Tags

CCSS.3.MD.C.7D

What is the purpose of dividing the composite figures into simpler shapes?

• To make it easier to paint

• To increase the figure's complexity

• To test the student's memory

• To simplify the calculation of the area

Tags

CCSS.3.MD.C.7D

What formula is used to calculate the area of a triangle?

• Length x Width

• Base x Height

• Length + Width

• Base x Height / 2

Tags

CCSS.6.G.A.1

How do you calculate the area of a rectangle?

• Length x Width

• Length + Width

• Base x Height / 2

• Base x Height

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

What is the area of the rectangle in the first example?

• 15 square feet

• 31.5 square feet

• 10.5 square feet

• 21 square feet

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

What is the total area of the first example figure?

• 31.5 square feet

• 21 square feet

• 10.5 square feet

• 50 square feet

Tags

CCSS.6.G.A.1

Why is it important to be organized when naming the simpler shapes?

• It's not important

• To make it look neat only

• To confuse the students

• To ensure accurate calculation

Tags

CCSS.1.G.A.2

In the second example, what is the length used for the rectangle's area calculation?

• 10 feet

• 15 feet

• 5 feet

• 20 feet

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

How is the base of the triangle determined in the second example?

• By dividing the height by 2

• By subtracting 10 from 15

• By adding 5 to 10

• By using the total length of 15 feet

Tags

CCSS.3.MD.D.8

What is the total area of the composite figure in the second example?

• 40 square feet

• 10 square feet

• 50 square feet

• 60 square feet

Tags

CCSS.3.MD.C.7D