Name each of the following angles in 4 ways Warm Up Name each of the following angles in 4 ways

Reflections

Reflect across the x-axis

Reflect across the x-axis Change the sign of the y-value

Reflect across the x-axis

PLICKERS Reflect point S across the x-axis: S(0,5) 𝐴) 𝑆 0, 5 →𝑆′(5, 0) 𝐴) 𝑆 0, 5 →𝑆′(5, 0) 𝐶) 𝑆 0, 5 →𝑆′(0, −5) B) 𝑆 0, 5 →𝑆′(−5, 0) 𝐷) 𝑆 0, 5 →𝑆′(0, 5)

Reflect across the y-axis

Reflect across the y-axis Change the sign of the x-value

Reflect across the y-axis

PLICKERS Reflect point T across the y-axis: T(1,5) 𝐴) 𝑇 1, 5 →𝑇′(5, 1) 𝐴) 𝑇 1, 5 →𝑇′(5, 1) 𝐶) 𝑇 1, 5 →𝑆′(1, −5) B) 𝑇 1, 5 →𝑇′(−5, 1) 𝐷) 𝑇 1, 5 →𝑇′(−1, 5)

Reflect across y = x

Reflect across y = x Swap x and y

Reflect across y = x

PLICKERS Reflect point S across the line y = x: S(0,5) 𝐴) 𝑆 0, 5 →𝑆′(5, 0) 𝐶) 𝑆 0, 5 →𝑆′(0, −5) B) 𝑆 0, 5 →𝑆′(−5, 0) 𝐷) 𝑆 0, 5 →𝑆′(0, 5)

Reflect across y = -x

Reflect across y = -x Swap and change both signs

Reflect across y = -x

PLICKERS Reflect point T across the line y = -x: T(1,5) 𝐴) 𝑇 1, 5 →𝑇′(−5, −1) 𝐶) 𝑇 1, 5 →𝑆′(−1, −5) B) 𝑇 1, 5 →𝑇′(5, 1) 𝐷) 𝑇 1, 5 →𝑇′(−1, 5)

Lines of Symmetry A line of symmetry is a line you can use to fold a figure so that both halves match up perfectly. This means the figure is symmetrical (balanced/matching) on both sides of the line.

Lines of Symmetry How many lines of symmetry does the polygon have? 3

Lines of Symmetry How many lines of symmetry does the shape have? 2

Lines of Symmetry How many lines of symmetry does the shape have? 5

Homework Practice Worksheet