Pls help me TwT Negative film was invented by (1), which allowed negative images to be produced. A negative image is a (2)
a.
(1) Ansel Adams;
(2) photographic print in white on a blue ground, often used for copying maps, or architects plans.
b.
(1) Henry Fox Talbot;
(2) tonal inversion of a positive image, where light appears dark, and dark appears light.
c.
(1) Keith Cottingham;
(2) photographic print in white on a blue ground, often used for copying maps, or architects plans.
d.
(1) Louis Daguerre;
(2) tonal inversion of a positive image, where light appears dark, and dark appears light.

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

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