Geometry GD, PPL, ATPL

point
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Terms in this set (23)
point
A location in space.
Line
An undefined term in geometry, a line is a straight path that has no thickness and extends forever.
line segment
part of a line with two endpoints
ray
A part of a line, with one endpoint, that continues without end in one direction
plane
a flat surface that has no thickness and extends forever
Collinear
points that lie on the same line
Coplanar
points that lie on the same plane
perpendicular lines
Two lines that intersect to form right angles
opposite reciprocals
A fraction flipped and sign changed. example: 2/3 is -3/2
angle
two rays with a common endpoint
vertexThe common endpoint of an anglesidesthe rays of an angleangle bisectora ray that divides an angle into two congruent anglessegment bisectora segment, ray, line, or plane that intersects a segment at its midpointlinear pairTwo adjacent angles that form a straight linesupplementary anglesTwo angles whose sum is 180 degreescomplementary anglesTwo angles whose sum is 90 degreesadjacent anglesAngles that have a common side and a common vertex (corner point).vertical anglesA pair of opposite congruent angles formed by intersecting linescorresponding angleslie on the same side of the transversal and in the same positionalternate interior anglesangles between 2 lines and on opposite sides of a transversalalternate exterior anglesAngles that lie outside a pair of lines and on opposite sides of a transversal.same side interior anglesThe two angles that are inside of two lines and are on the same side of the transversal