The area of trapezoidThe area of trapezoidThe area of trapezoidThe area of trapezoid

1cm

1cm

Parallelogram

1㎠

10cm2 + 2cm2 = 12cm2

Let’s estimate Let’s estimate

Let’s estimate Let’s estimate

1cm

1cm

Let’s estimate Let’s estimate

1cm

1cm

5cm 4cm =ⅹ 20cm2

Let’s make figuresLet’s make figures

trapezoid

triangle rectangle

parallelogram

Let’s find the area of trapezoidLet’s find the area of trapezoid

3cm

7cm

4cm

(7ⅹ4)÷2=14 (3ⅹ4)÷2=6

14+6=20cm2

Let’s find the area of trapezoidLet’s find the area of trapezoid

3cm

7cm

4cm

3cm2cm 2cm

5ⅹ4=20cm2

4cm

3cm 2cm

Let’s find the area of trapezoidLet’s find the area of trapezoid

7cm

3cm

3cm

7cm

4cm

(7+3)ⅹ4 ÷2 = 20cm2

Let’s check the areaLet’s check the area

10cm2

9cm2

4cm2

Today, We learned about…Today, We learned about…

the area of trapezoid

We can find

With triangles

Today, We learned about…Today, We learned about…

the area of trapezoid

We can find

With a rectangle.

Today, We learned about…Today, We learned about…

the area of trapezoid

We can find

With parallelogram.

Next time, we will learn about…Next time, we will learn about…

Area of the rhombus