Alg1 per2 5 18 transformations

Transformations
Leslie Paytes
2009

What is a transfomation?
A transformation changes the position or orientation of a figure
a transfomation changes the position or orientation of a figure

What do you call the resulting shapes of a transformation?
The resulting shapes are called images of the original. Each image is read as prime, double prime, triple prime...

Instruction- Vocabulary-Move Mathman to reveal definition
Translation
figure slides along a straight
line without turning
Reflection
the figure flips across a line of reflection,
resulting in the mirror image
Rotation
figure turns around a fixed point

Translation- moving in a straight line
without turning
Graph a triangle at
A(-3,2)B(-5,2)C(-5,5)
Graph the translation of
this triangle using
the rule
(x',y')=(x+2, y-4)

Reflection: Flip the image across a
line to create a mirror image of
the original
Graph an arrow
A(-4,1), B(-6,3) C(-5,6)
D(-3,6), E(-2,3)
Reflect over the line y=-2

Rotation: the figure rotates around a
fixed point
Rotate triangle ABC 180 degrees around the origin
A(-3,1)B(-7,1)C(-7,7)
Click on grid to see
rotated figure

Alg1 per2 5 18 transformations

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