Rotations
Can a reflection change the shape of a figure?
No, a reflection always ends with congruent figures.
Can a reflection change the size of a figure?
No, figures are congruent after a reflection.
When you translate a figure around the grid, does its orientation change?
A translation does not change the orientation of a grid.
A rotation can be explained by this one word.
Turn
A reflection can be explained by this one word.
Flip
A translation can be explained with this one word.
A slide.
Define congruent.
Congruent means the same. Same angles and same side lengths.
Point (1,2) was reflected across the the x-axis. What the new coordinate point?
(1,-2)
(6,1)
A'
If square CHAT is reflected across the y-axis. Which side length corresponds to side length CH
line segment CH'
If an image is translated around a coordinate grid more than once, will its position (orientation) stay the same?
Yes, the orientation of a figure does not change.
In Image B, line segments FG and HI are parallel. This means that in the image that gets rotated, which line segments will be parallel?
FG' and HI' (or LM and NO)
A reflection across the y-axis means the x-coordinate of each point will...
Change in sign. Positives will turn negative and negatives positive.
What is one way you can remember that a translation is a slide?
SL in tranSLation for SLide.