Triangle Centers

Triangles - Incenter


The incenter of a triangle is the intersection of which 3 lines in the triangle?

Which of the following statements is true about the incenter?

Which of the following triangles doesn't have the incenter?

How can we find the point equidistant from all sides in a triangle?

Point II in the diagram above is the incenter of ABC\triangle{ABC}. If IAB=40\angle{IAB}=40^\circ and IBC=30\angle{IBC}=30^\circ, what is the measure of IBA\angle{IBA}?


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