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17 Cards in this Set

  • Front
  • Back
To have one or more points in common.
the point that divides or besects a segment into two congruent segments.
angle bisector
a ray that divides an angle into two adjacent angles that are congruent
perpendicular lines
Two lines that intersect to form a right angle
perpendicular bisector
a segmant, ray, line, or plane that is perpendicular to a segmant and its midpoint
perpendicular bisector of a triangle
a line, ray, or segmant that is perpendicular to a side of a trianlge at the midpoint of the side
concurrent lines
3 or more lines that intersect in the same point
circumcenter of a triangle
the point of concurrency of the perpendicular bisectors of a triangle
angle bisector of a triangle
a bisector of an angle of the triangle
incenter of a triangle
the point of concurrency of the angle bisectors of the triangle
Median of a triangle
a segmant whos endpoints are a vertex of the triangle and the midpoint of the opposite side.
centroid of a triangle
the point of concurrency of the medians of a tiangle
altitude of a triangle
the perpendicular segment from a vertex of a tiangle to the opposite side or to the line that contains the oppisite side
orthocenter of a triangle
the [pmt pf concurrency of the lines containing the altitudes of a tiangle
midsegmant of a triangle
a seg,emt that connects the midpoints of two sides of a triangle
indirect proof
a proof in which you prove that a statement is true by first assuming that its opposite is true. if this assumption leads to an impossibility then you have proved that the original statement is true.