Transformations and Similar Shapes Flashcards
1
Q
object —->
A
image
2
Q
What is used for translations?
A
vectors
3
Q
How do you describe a rotation?
A
- the centre of rotation
- the angle of rotation
- the direction of rotation (clockwise/anticlockwise)
4
Q
How do you describe a reflection?
A
You sate its mirror line
5
Q
How do you describe an enlargement?
A
- how many times bigger the shape is=scale factor
- where the centre of enlargement is
6
Q
What is used to help do an enlargement?
A
projection lines
7
Q
Enlargement by a negative scale factor
A
Enlargement by a negative scale factor rotates the enlarged shape and puts it on the opposite side of the centre.
