$\"\"$

\

(a) Find the area of $\"\"$ .

\

Area of the triangle $\"\"$ :

\

Area of $\"\"$

\

$\"\"$

\

Observe the diagram:

\

$\"\"$ and $\"\"$ .

\

Substitute $\"\"$ and $\"\"$ .

\

$\"\"$ .

\

Area of $\"\"$ is $\"\"$ .

\

$\"\"$

\

(b) Find the area of $\"\"$ .

\

In $\"\"$ $\"\"$ and $\"\"$ .

\

Area of the triangle $\"\"$ :

\

Area of $\"\"$

\

$\"\"$

\

Substitute $\"\"$ and $\"\"$ .

\

$\"\"$ .

\

Area of $\"\"$ is $\"\"$ .

\

$\"\"$

\

(c) Find the area of $\"\"$ .

\

Area of $\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Area of $\"\"$ is $\"\"$ .

\

$\"\"$

\

(d)

\

Consider $\"\"$ .

\

$\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

(e)

\

Area of $\"\"$ Area of $\"\"$ + Area of $\"\"$ .

\

$\"\"$

\

Substitute $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

(a) Area of $\"\"$ is $\"\"$ .

\

(b) Area of $\"\"$ is $\"\"$ .

\

(c) Area of $\"\"$ is $\"\"$ .

\

(d) $\"\"$ .

\

(e) $\"\"$ .