Undefined term
A simple figure that is not defined in state of other figures.

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CollinearPoints the lie on the very same line.
PlaneA flat surface that has no thickness and extends forever.
LineA straight route that has no thickness and also extends forever.
PointA location that has actually no size.
CoplanarPoints the lie in the very same plane.
EndpointA suggest at an finish of a segment or the starting point that a ray.
RayA component of a line the starts at an endpoint and also extends forever in one direction.
PostulateA statement the is embraced as true there is no proof, also called one axiom.
VertexThe typical endpoint of the political parties of one angle.
Opposite raysTwo beam that have a usual endpoint and kind a line.
SegmentA component of a line consisting of 2 endpoints and also all points in between them.
DistanceThe absolute value of the difference of the coordinates of two points.
ConstructionA method of creating a figure that is considered to it is in mathematically precise.
BetweenGiven three points A, B, and C, B is in between A and C if and only if all 3 of the point out lie on the very same line, and abdominal + BC = AC.
Coordinate planeA plane that is split into four regions by a horizontal line called the x-axis and also a upright line dubbed the y-axis.
CoordinateA number provided to determine the ar of a point.
Congruent segmentsTwo segments that have the same length.
DegreeA unit of edge measure.
MidpointThe allude that divides a segment into two congruent segments.
BisectTo divide right into two congruent parts.
AngleA number formed by 2 rays through a typical endpoint.
MeasureThe usage of systems to find a dimension or quantity.
Segment bisectorA line, ray, or segment that divides a segment right into two congruent segments.
Vertical anglesThe nonadjacent angles created by two intersecting lines.
Straight angleAn angle formed by 2 opposite light ray that measures 180°.
Acute angleAn angle that measures higher than 0° and less 보다 90°.
Right angleAn angle that steps 90°.
Interior of an angleThe set of all points between the political parties of one angle.
Obtuse angleAn angle that measures greater than 90° and also less than 180°.
Exterior of one angleThe collection of all points external an angle.
Adjacent anglesTwo angle in the same aircraft with a usual vertex and also a usual side, however no typical interior points.
Complementary anglesTwo angle whose measures have actually a amount of 90°.
Supplementary anglesTwo angles whose measures have a sum of 180°.
Angle bisectorA ray that divides one angle right into two congruent angles.
Linear pairA pair of adjacent angles who noncommon sides are opposite rays.
Congruent anglesAngles that have actually the same measure.
ImageA shape that results from a change of a figure.
PreimageThe original number in a transformation.
ReflectionA change across a line.
TransformationA readjust in the position, size, or shape of a figure.
RotationA transformation about a allude P, such that each point and its image are the same distance indigenous P.
TranslationA change in which all the clues of a number move the same distance in the same direction.
legOne the the two sides the the right triangle that type the ideal angle.
AreaThe variety of nonoverlapping unit squares the a given size the will exactly cover the internal of a airplane figure.
HypotenuseThe side opposite the appropriate angle in a ideal triangle.
LengthThe distance in between the two endpoints the a segment.
baseAny side of a triangle.
HeightAsegment indigenous a crest that develops a best angle with a heat containing the base.
RadiusA segment who endpoints are the facility of a circle and also a suggest on the circle, or the distance from the facility of a circle to any point on the circle.
PerimeterThe sum of the side lengths that a closed plane figure.
piThe ratio of the circumference of a circle to its diameter, denoted by the Greek letter π.
CircumferenceThe distance roughly the circle.

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DiameterA segment the passes with the center of a circle and whose endpoints are on the circle, or the length of such a segment.