Which European country's flag is a dark blue rectangle on which is mounted an inverted gold right angled triangle and a line of nine white stars?
Flag of Bosnia and Herzegovina flag, the field was light blue and had five narrow yellow bars. Westendorp's decision ended up being the first alternative flag. However, it was changed slightly to a darker blue to symbolize the European Union's flag. Flag of Bosnia and Herzegovina The flag of Bosnia and Herzegovina contains a wide medium blue vertical band on the fly side with a yellow right triangle abutting the band and the top of the flag. The remainder of the flag is medium blue with seven full five-pointed white stars and two half stars top and bottom along the hypotenuse of the triangle. The
Ailles rectangle Ailles rectangle The Ailles rectangle is a rectangle constructed from four right-angled triangles which is commonly used in geometry classes to find the values of trigonometric function of 15° and 75°. It is named after high school teacher Douglas S. Ailles. In every beginning trigonometry course, one learns of the 30°–60°–90° triangle with sides of length 1, 2, and . When two such triangles are placed in the positions shown in the illustration, the smallest rectangle that can enclose them has width 1 + and height . Drawing a line connecting the original triangles' top corners creates a 45°–45°–90° triangle