A specific disease caused by infection with Mycobacterium tuberculosis, the tubercle bacillus, which can affect almost any tissue or organ of the body, the most common site of the disease being the lungs.
The Upside-Down Triangle: a model for the 21st century church. (friends, let me offer a disclaimer that this post is deeply wonky. If church systems talk is what you want, read on. Otherwise, I'll be back to your regularly scheduled programming soon).
An equilateral triangle is an isosceles triangle as it has 2 lengths that are equal and 2 equal sized angles. An isosceles triangle does not necessarily have to have equal lengths and angles do not have to be 60 degrees. So an equilateral triangle is an isosceles triangle but an isosceles triangle may not always be an equilateral triangle.