Lesson 10-8 Pages 451-454 Translations. Example 1: Translate ∆ABC 5 units left and 1 unit up. B CA A’B’ C’

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Lesson 10-8 Pages Translations

Example 1: Translate ∆ABC 5 units left and 1 unit up. B CA A’B’ C’

Example 2: Trapezoid GHIJ has vertices G(–4, 1), H(–4, 3), I(–2, 3), and J(–1, 1). Find the vertices of trapezoid GHIJ after a translation of 5 units right and 3 units down. Then graph the figure and its translated image.

G HI J G'G' H'H' I'I' J'J'

Example 3: Ana is seated at the square marked X. She is moved to the seat marked Y. Describe the translation as an ordered pair. (2,2)

A'A' C'C' B'B'

D E F G D'D' E'E' F'F' G'G'

D'D' E'E' F'F' G'G' D E F G

Page 453 Guided Practice #’s 3-5

A'A' C'C' B'B'

Pages with someone at home and study examples! Read:

Homework: Page #’s 6-13 all #’s all Lesson Check 10-8

Lesson 10-9 Pages Reflections

Example 1: Determine whether each figure has a line of symmetry. If so, copy the figure and draw all the lines of symmetry.

Example 2: Determine whether each figure has a line of symmetry. If so, copy the figure and draw all the lines of symmetry.

Example 3: Determine whether each figure has a line of symmetry. If so, copy the figure and draw all the lines of symmetry. No symmetry

Example 4: Quadrilateral QRST has vertices Q(–1, 1), R(0, 3), S(3, 2), and T(4, 0). Find the coordinates of QRST after a reflection over the x-axis. Then graph the figure and its reflected image.

Q R S T Q’ R’ S’ T’

Example 5: Triangle XYZ has vertices X(1, 2), Y(2, 1), and Z(1, –2). Find the coordinates of XYZ after a reflection over the y- axis. Then graph the figure and its reflected image.

X Y Z X Y Z

Page 458 Guided Practice #’s 3-6

Pages with someone at home and study examples! Read:

Homework: Page #’s 7-17 all #’s all Lesson Check Ch 10

Study Guide and Review Pages #’s 6-22 (Odd answers in back of book)

Prepare for Test! Pages #’s 3-13, 16 and 1-16