Unit 10: Transformations

Translate Right

Add to X value (x+1)

Translate Up

Add to Y value (y+1)

Rigid

Another name for a congruent shape is what?

Smaller

DILAtions get bigger or ?

Scale factor greater than 1

Enlargement or gets bigger

Proportion

If given 2 similar triangles, what should you set up to find the missing side by cross multiplying

Rotate 180 degrees about the origin(cw or ccw)

Multiply X and Y value by -1 , DO NOT SWAP (-x, -y)

Relect over the Y axis

Multiply X by -1 (or change X value to the opposite) (-x, y)

Rotate 90 degrees clockwise(270 ccw)

Multiply X value by -1, then swap (y, -x)

Reflect over the X axis

Multiply Y by -1 (or change Y value to the opposite) (x, -y)

Rotate 90 degrees counterclockwise(270 cw)

Multiply Y value by -1, then swap (-y, x)

Dilation

Multiply the X and Y value by the scale factor.

scale factor less than 1

Reduction or gets smaller

Translate Left

Subtract from X value (x-1)

Translate Down

Subtract from Y value (y-1)

Image

The shape after it has been transformed is called what? (Instead of new image)

Pre-image

The shape before the transformation is called?

Stack the letter

To see what letters and sides are proportional to each other like ABC~DEF?

Prime

What sign is used to label the new image?

Flip

What's the key word for reFLection?

Slide

What's the key word for tranSLation?

Orientation

When the way a shape is facing changes is called what?

Scale Factor

When you divide the New Image/Pre-image you have found the what?

Translations, Reflections, and Rotations

Which transformations are congruent? (meaning they stay the same size)

Dilations

Which transformations are similar? (same shape but different size)

Turn

what's the key word for roTation?