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.
Let the arc intersect the angle at points X and Y. The midpoint P between X and Y is on the angle bisector ov the angle A so you just need to draw a line. In fact, the perpendicular bisector of the line segment XY is the angle bisector. To prove this, note that by construction AX and AY are equal, as are XP and YP.Thus triangles AXP and AYP are congruent. know how to do the Perpendicular bisector, but not the angle bisectors. You are supposed to draw a triangle on a piece of paper,... show more I'm taking geometry in the 8th grade, and my teacher is a ******* *****. she wont explain anything when I ask her.