Text of REFLECTIONS, ROTATIONS AND TRANSLATIONS. Reflections
Slide 1
REFLECTIONS, ROTATIONS AND TRANSLATIONS
Slide 2
Reflections
Slide 3
OBJECT IMAGE Reflect the triangle in the mirror line. The line
joining a point to its image is always at right angles to the
mirror line.
Slide 4
OBJECT IMAGE Reflect the shape in the mirror line. The line
joining a point to its image is always at right angles to the
mirror line.
Slide 5
OBJECT IMAGE Reflect the shape in the line y = 5. First draw
the mirror line. y x 2 2 4 4 6 6 0 0 8 8 10
Slide 6
Rotations
Slide 7
Rotate the triangle 90 o clockwise about the given point.
Slide 8
Use tracing paper for rotations.
Slide 9
Rotate the triangle 90 o clockwise about the given point.
Object Image
Slide 10
Rotate the triangle 180 o about the given point.
Slide 11
Use tracing paper for rotations.
Slide 12
Rotate the triangle 180 o about the given point. Object
Image
Slide 13
Translations
Slide 14
A translation is a transformation that slides a shape from one
place to another. IMAGE OBJECT In a translation each point on the
original shape moves the same distance and in the same direction.
This is a translation of. The top number is the movement in the x
direction. positivenegative The bottom number is the movement in
the y direction. positive negative 4 5
Slide 15
IMAGE Translate the shape by the vector. OBJECT 3 2
Slide 16
IMAGE Translate the shape by the vector. OBJECT 4 2
Slide 17
IMAGE Translate the shape by the vector. OBJECT 3 1
Slide 18
IMAGE Translate the shape by the vector. OBJECT 4 1