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8.7 translations and rotations 3
- 1. Lesson 8.8 , For use with pages 447-454 1. length of CD Quadrilateral ABCD quadrilateral RSTU . Find the given measures. ~ = 6 m 5 m 70º 8 m 85º A B C D T U S R 2. m D
- 2. Lesson 8.8 , For use with pages 447-454 ANSWER 8 m 1. length of CD Quadrilateral ABCD quadrilateral RSTU . Find the given measures. ~ = 6 m 5 m 70º 8 m 85º A B C D T U S R ANSWER 85º 2. m D
- 3. Translations and Rotations Section 8.7 P. 439 - 443
- 5. EXAMPLE 2 Rotating 90 Clockwise SOLUTION Rotate quadrilateral FGHJ 90 clockwise. Original Image ( x , y ) F (2, 2) G (2, 4) H (4, 4) J (5, 2) ( x , – y ) F’ (2, –2) G’ (4, –2) H’ (4, –4) J’ (2, –5)
- 6. EXAMPLE 2 Rotating 90 Clockwise SOLUTION Rotate quadrilateral FGHJ 90 clockwise. Original Image ( x , y ) F (2, 2) G (2, 4) H (4, 4) J (5, 2) ( x , – y ) F’ (2, –2) G’ (4, –2) H’ (4, –4) J’ (2, –5)
- 7. 1. RST has vertices R ( – 1, 4) , S (3, 4) , and T (2, – 3) . Find the vertices of its image after the translation ( x , y ) -> ( x – 4 , y + 5 ). ∆ ANSWER R' (–5, 9), S' (–1, 9), T' (–2, 2)