The flag of Ethiopia is a horizontally-oriented tricolor with equal stripes of green, yellow, and red. The aspect ratio of the flag is 1:2. The color codes for the flag are:

• Green: Pantone 347 C / RGB 0, 153, 0
• Yellow: Pantone 116 C / RGB 255, 204, 0
• Red: Pantone 186 C / RGB 206, 17, 38

The geometric properties and measurements of the flag are as follows:

• The width of each stripe is one-third of the height of the flag.
• The green stripe is at the top, followed by the yellow and then the red.
• The diameter of the yellow circle in the center of the flag is half the height of the flag.
• The center of the circle is located at a distance of one-sixth of the height of the flag from the hoist side.

Note that these measurements are not exact, as there may be slight variations depending on how the flag is produced.