The document discusses the concepts of enlargement including: 1) The point of enlargement is where the object and enlarged image meet. 2) The scale factor (k) is the ratio of the lengths of the corresponding sides of the object and enlarged image. 3) The area of the enlarged image can be calculated by multiplying the scale factor squared by the area of the original object.

1. Friday, January 25, 2013
Enlargement
By
Airil Bin Ahmad
AIRIL BIN AHMAD

2. Friday, January 25, 2013
Enlargement
a.Point of Enlargement
AIRIL BIN AHMAD

3. Friday, January 25, 2013
AIRIL BIN AHMAD

4. Friday, January 25, 2013
Enlargement
b. Scale Factor (k)
Formula : k = Drawing
Object
AIRIL BIN AHMAD

5. Friday, January 25, 2013
A’ K= D / O
= A’C’ / AC
= 6/2
A = 3
C B
C’ B’
AIRIL BIN AHMAD

6. Friday, January 25, 2013
Enlargement
c. Area under the enlargement
Formula: Area= k2 x area of the object
AIRIL BIN AHMAD

7. Friday, January 25, 2013
A’ A= k2 x area of object
= 32 x ½ x 1 x 2
= 9x1
A = 9 unit2
C B
C’ B’
AIRIL BIN AHMAD

8. Friday, January 25, 2013
Enlargement
a.Point of Enlargement
AIRIL BIN AHMAD

9. Friday, January 25, 2013
AIRIL BIN AHMAD

10. Friday, January 25, 2013
Enlargement
b. Scale Factor (k)
Formula : k = Drawing
Object
AIRIL BIN AHMAD

11. Friday, January 25, 2013
AIRIL BIN AHMAD

12. Friday, January 25, 2013
Enlargement
c. Area under the enlargement
Formula: Area= k2 x area of the object
AIRIL BIN AHMAD

13. Friday, January 25, 2013
AIRIL BIN AHMAD

14. Friday, January 25, 2013
Exercise 1.
Object
A B
Drawing
Find:
a. Point of Enlargement
b. Scale Factor
c. Given that area of hexagon
is 3cm2. Find the area under
the enlargement
A B
’ ’ AIRIL BIN AHMAD