This photo represents the Mnemonic Device principle because of the sentence that I used to recall the three math rules." Oh Hell Another Hour Of Algebra" each first letter in this sentence words is organized and has an exact same first letter in the three rules of math. This method makes it easier to recall complex rules of math.
This photo represents the Legibility principle. It's easy to read the text because of the size, typeface, contrast, text blocks, and the spacing. Also, the dark text on light background increases the legibility of the text.
This photo represents the Golden ratio principle, because of the rectangular shape of the IPhone, and also because of the two elements, such as height to width, and the IPhone's shape considered as a golden rectangle.
This photo represents the Depth (3D projection) principle, because it is possible to see this photo in three dimensions, such as the depth of the picture. Also, the shaded part of the sea looks farther than the bright sea in the front. Also, we can assume that the size of the man who is standing on the edge and pulling the robe is not small but far away from the man in the front who looks bigger.
This photo represents the Color principle. The leaves of this tree are colored by three main colors which are they red, orange, and yellow. These colors are Analogous color combination which means that they are next to each other on the color wheel.
This photo represents the Light principle. This is a name of a building in the OSU campus at night. The light source is beneath the letters which makes them shine at night, and makes unusual looking, so it grabs the people attention.
This photo represents the Alignment principle. The trees on the left side are aligned with the trees on the right side, which makes a sense of unity. Also, the trees are organized in a one lone , which makes the design of this park more powerful.