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Warm-up

Warm-up. What is 7% of 28?. 40% of 36 is what?. Plotting Points. A (5, 1) B (-2, 4) C (0, -4) D (-3, -1) E (2, 0). Give the coordinates. B. C. D. A. E. Find the perimeter of the rectangle formed by connected the points A (1, 2) B (4, 2) C(1, 5) D (4, 5).

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Warm-up

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  1. Warm-up What is 7% of 28? 40% of 36 is what?

  2. Plotting Points A (5, 1) B (-2, 4) C (0, -4) D (-3, -1) E (2, 0)

  3. Give the coordinates. B C D A E

  4. Find the perimeter of the rectangle formed by connected the points A (1, 2) B (4, 2) C(1, 5) D (4, 5)

  5. Transformations – movements of the geometric figure Preimage – position of the figure before the transformation. Image – the position of the figure after the transformation.

  6. Types of Transformations Reflection – figure is flipped over a line

  7. Types of Transformations Translation – (slide) -figure is slid in any direction

  8. Types of Transformations Dilation – a figure is enlarged or reduced

  9. Types of Tranformations Rotation – a figure is turned around a point

  10. Point P(4, 3) is translated 5 units to the left and 2 units down. Write the coordinates of the image P’.

  11. A translation slides P (-5, -2) 8 units to the right and 4 units up, write the coordinates of the image P’.

  12. What are the coordinates of the image of triangle ABC if it slides 3 units right and 2 units down? A B C

  13. Triangle BAC has coordinates B (3, 4), A (9, 2) and C (5, 6). State the coordinates of the image of triangle BAC after a slide of the triangle 4 units to the left and 3 units up.

  14. Rotation Rotation of 180º.

  15. Reflection – flip over a line Two flips is the same as rotating the original figure 180º clockwise about the origin.

  16. Reflect about the y-axis

  17. Reflect about the x-axis.

  18. Rotate the figure 180º about the origin.

  19. Homework Page 119 (1-10)

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