Last week we finished Unit 2 Lesson 1 and started Lesson 2, which introduced different types of transformations including translations, reflections, rotations, and dilations. The document then focused on reflections, explaining that a reflection flips a figure across a line to create a mirror image. An example showed how to graph the reflection of triangle FGH across the x-axis by multiplying the y-coordinate of each vertex by -1. In conclusion, an IXL assignment was given to practice transformations using translations.

1. Last week we finished Unit 2 Lesson 1 and
started Lesson 2.

2. Transformations
- Translations (slide)
- Reflections (flip)
- Rotations (turn)
- Dilations (zoom)

3. Learn to transform plane figures using
reflections.

4. A reflection flips a figure across a line to
create a mirror image.

10. Graph the reflection of triangle FGH across the
x-axis.
Multiply the y-coordinate
of each vertex by –1.
Rule Image
F(–4, –2)F’ (–4, –2  –1) F’(–4, 2)
G(1, –3) G’ (1, –3  –1) G’(1, 3)
H(–2, –4)H’ (–2, –4  –1) H’(–2, 4)
H’
G’
F’
Example: Graphing Reflections on a Coordinate
Plane

19. Today we learned to transform plane
figures using translations.
IXL Skill Q.4
IXL Skill Q.5