It would be ideal if each person could have his or her private office, but that is often unrealistic and extremely costly. Therefore, to create peace and harmony a few rules of etiquette should be observed.
The word isosceles is pronounced eye-sos-ell-ease with the emphasis on the 'sos'. It is any triangle that has two sides the same length. If all three sides are the same length it is called an equilateral triangle. Obviously all equilateral triangles also have all the properties of an isosceles triangle.
If we define an isosceles triangle as one in which strictly two sides are of equal length then, no, an equilateral triangle is not isosceles. On the other hand, if we define an isosceles triangle as one for which there exists a pair of sides of equal length then, yes, an equilateral triangle is isosceles.