Medical Definition of Snellen chart. : the chart used in the snellen test with black letters of various sizes against a white background.
The circumcenter, the incenter is the point of concurrency of the angle bisectors of a triangle.
Definition of Angle Bisector. Angle Bisector is a ray that divides an angle into two equal parts. 1  Angle bisector is also called the internal angle bisector.  Angle bisectors of a triangle intersect at a point called incenter of the triangle.