Micro Teaching3

chapter 3:

TRANSFORMATIONS III Subtopic 3.1C Drawing the image for combination of two transformations 3.1D Stating the coordinates of the image under combined transformations

Learning Outcomes At the end of this lesson, you should be able: To draw the image under combination of two transformations To state the coordinates of the image of a point under combined transformations

Let’s recall!!

Example:  − 4   T = Translation  3  E = Enlargement at the origin with a scale factor of 2 R = Rotation through 90º anticlockwise about (-1,2) P = Reflection in the line x = -1

Given,

Draw an image for object A under the following combined transformations. (a) TR (b) PE

6

4

2

-5

A

5

-2

-4

ACTIVITY ONE  3  Translation − 5   

Given, T = P = Reflection in the line y = x R = Rotation through 90º clockwise about (0, 1) and E = Enlargement at (1, -1) with a factor scale factor of 2 Draw the image of object M: a) TP b) PR c) PE

10

8

6

C B

A

-10

D

M

4

E F

2

-5

5

-2

-4

10

Worksheet Given P is a reflection in the line y = 2, T is a Translation  3  , R is a rotation through 90º    2

anticlockwise at (-3, 0) and E is an enlargement at ( -2,-2) with a scale factor of 2. Draw the image of V and find the coordinates of S (-6,-4) under the following combined transformations. a) TP b) RE c) RT

8

6

4

2

-10

-5

5

-2

V S(-6,-4)

-4

-6

-8

10

Summary: REFLECTION TRANSLATION

Drawing the image

P

T OIN

O

AG M I F

E

Stating the coordinates

RO

TAT

ENG

LAR

ION

GEM ENT

Before end our class, I want to say…

Selamat Hari Raya Aidilfitri