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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 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)
Transformations – movements of the geometric figure Preimage – position of the figure before the transformation. Image – the position of the figure after the transformation.
Types of Transformations Reflection – figure is flipped over a line
Types of Transformations Translation – (slide) -figure is slid in any direction
Types of Transformations Dilation – a figure is enlarged or reduced
Types of Tranformations Rotation – a figure is turned around a point
Point P(4, 3) is translated 5 units to the left and 2 units down. Write the coordinates of the image P’.
A translation slides P (-5, -2) 8 units to the right and 4 units up, write the coordinates of the image P’.
What are the coordinates of the image of triangle ABC if it slides 3 units right and 2 units down? A B C
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.
Rotation Rotation of 180º.
Reflection – flip over a line Two flips is the same as rotating the original figure 180º clockwise about the origin.
Homework Page 119 (1-10)