sheep(noun) woolly usually horned ruminant mammal related to the goat. sheep(noun) a timid defenseless simpleton who is readily preyed upon. sheep(noun) a docile and vulnerable person who would rather follow than make an independent decision.
The incenter is the one point in the triangle whose distances to the sides are equal. (See picture) 1  If the triangle is obtuse, such as the one on pictured below on the left, then the incenter is located in the triangle's interior.  If the triangle is acute, then the incenter is also located in the triangle's interior.
Given any triangle, it is always possible to find a circle inside the triangle such that the circle is tangent to each of the three sides of the triangle. This is the so called inscribed circle. Use one of the points shown above as the midpoint of the circle. This point is called the incenter of the triangle.