1 / 13

Warm Up

Warm Up. 1. A point P has coordinates (1, 4). What are its new coordinates after reflecting point P across the x-axis? [A] (-1, 4) [B] (1, 4) [C] (1, -4) [D] (-1, -4)

bernitag
Download Presentation

Warm Up

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Warm Up 1. A point P has coordinates (1, 4). What are its new coordinates after reflecting point P across the x-axis? [A] (-1, 4) [B] (1, 4) [C] (1, -4) [D] (-1, -4) 2. Identify the coordinates of the image point formed by reflecting (3, -6) across the y-axis.   [A] (3, 6) [B] (-3, -6) [C] (3, -6) [D] (-3, 6) 3. Suppose a constellation of stars is plotted on a coordinate plane. The coordinates of the first star are at (4, 1). The star is translated left 5 units. What are its new coordinates? [A] (-1, 1) [B] (4, 6) [C] (9, 1) [D] (4, -4) 6. Write the translation of point P(2, -9) to point P’(-1,-11).    [A] (x,y) to (x -3, y-2) [B]  (x, y) to (x + 3, y +2) [C] (x, y) to (x + 2, y +3) [D]  (x, y) to (x – 2, y – 3)

  2. Rotations The figure turns around a fixed point.

  3. Rotation" means turning around a center: The distance from the center to any point on the shape stays the same. • Every point makes a circle around the center.

  4. Rotate 90° • Rule (x,y) flips to (y,x) *See what quadrant you end up in for the signs. EX: (1,2) rotated clock wise ends up in quadrant IV (1,-2)

  5. Rotate 180° • Rule (x,y) does not flip but signs change (-x,-y) EX: (-5,-1) becomes (5,1)

  6. Rotate 270° • Rule (x,y) flips to (y,x). *See what quadrant you end up in for the signs. EX: (5,6) rotated in a clockwise direction ends up in quadrent II so, (-6,5)

  7. a) Rotate Triangle ABC 90 counterclockwise. b) Rotate Triangle ABC 180 counterclockwise.C) Rotate Triangle ABC 270 counterclockwise.

  8. Rotate 360° • What would happen to the figure if you rotated it 360°? • Video

More Related