Chapter 5 Flashcards
If a segment joins the midpoint of two sides of a triangle then the segment is parallel to the third side and is half the length
Triangle mid segment theorem
Segment connecting the midpoint of two sides
Mid segment of a triangle
When proving mid segment theorem use coordinates, geometry, and algebra
Coordinate proof
X1+x2,y1+y2
______ ______
2 2
Midpoint formula
Square root of (x2 - x1) squared plus (y2 - y2) squared
Distance formula
If a point is on the perpendicular bisector of a segment then it is equidistant from the endpoints of the segment
Perpendicular bisector theorem
If a point is equidistant from the endpoints of a segment then it is on the perpendicular bisector of the segment
Converse of perpendicular bisector theorem
If a point is on the bisector of an angle tenge point is equidistant from the sides of the angles
Angle bisector theorem
If a point in the interior angle is equidistant from the sides of the angles then the point is on the angle bisector
Converse of angle bisector theorem
Length of the perpendicular segment from the point to the line
Distance form point to line
The perpendicular bisectors of the sides of a triangle are concurrent at a point equidistant from the vertices
Theorem 5-6
The bisectors of the angle a of a triangle are concurrent at a point equidistant from the sides
Theorem 5-7
When three or more lines intersect at one point
Concurrent
The point at which the concurrent is
Point of concurrency
The point of concurrency is called this
Circumvented of triangle