Undefined term
A basic figure the is not defined in state of various other figures.

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CollinearPoints that lie ~ above the exact same line.
PlaneA level surface that has actually no thickness and extends forever.
LineA straight course that has no thickness and also extends forever.
PointA location that has no size.
CoplanarPoints that lie in the same plane.
EndpointA suggest at an finish of a segment or the beginning point of a ray.
RayA part of a line the starts at an endpoint and extends forever in one direction.
PostulateA statement that is embraced as true without proof, likewise called an axiom.
VertexThe typical endpoint the the political parties of one angle.
Opposite raysTwo beam that have actually a typical endpoint and form a line.
SegmentA part of a line consisting of two endpoints and all points in between them.
DistanceThe absolute value of the difference of the works with of 2 points.
ConstructionA method of producing a number that is taken into consideration to it is in mathematically precise.
BetweenGiven three points A, B, and C, B is between A and C if and only if all 3 of the point out lie top top the exact same line, and abdominal muscle + BC = AC.
Coordinate planeA aircraft that is split into four regions through a horizontal line called the x-axis and a upright line referred to as the y-axis.
CoordinateA number supplied to recognize the location of a point.
Congruent segmentsTwo segment that have actually the very same length.
DegreeA unit of edge measure.
MidpointThe allude that divides a segment right into two congruent segments.
BisectTo divide right into two congruent parts.
AngleA number formed by 2 rays with a common endpoint.
MeasureThe usage of units to discover a dimension or quantity.
Segment bisectorA line, ray, or segment the divides a segment right into two congruent segments.
Vertical anglesThe nonadjacent angles developed by 2 intersecting lines.
Straight angleAn angle developed by 2 opposite rays that procedures 180°.
Acute angleAn angle that measures higher than 0° and less 보다 90°.
Right angleAn angle that steps 90°.
Interior of an angleThe collection of every points in between the political parties of one angle.
Obtuse angleAn angle that measures greater than 90° and less than 180°.
Exterior of one angleThe collection of every points external an angle.
Adjacent anglesTwo angles in the same plane with a usual vertex and a common side, however no typical interior points.
Complementary anglesTwo angle whose measures have a amount of 90°.
Supplementary anglesTwo angle whose measures have actually a amount of 180°.
Angle bisectorA ray that divides an angle right into two congruent angles.
Linear pairA pair of surrounding angles who noncommon sides are opposite rays.
Congruent anglesAngles that have the very same measure.
ImageA form that outcomes from a change of a figure.
PreimageThe original number in a transformation.
ReflectionA change across a line.
TransformationA adjust in the position, size, or shape of a figure.
RotationA transformation about a point P, such the each point and its photo are the same distance indigenous P.
TranslationA change in which every the point out of a number move the very same distance in the very same direction.
legOne that the two sides of the appropriate triangle that form the best angle.
AreaThe variety of nonoverlapping unit squares the a provided size that will precisely cover the interior of a plane figure.
HypotenuseThe next opposite the right angle in a ideal triangle.
LengthThe distance between the 2 endpoints that a segment.
baseAny side of a triangle.
HeightAsegment native a peak that develops a right angle v a heat containing the base.
RadiusA segment who endpoints room the center of a circle and also a suggest on the circle, or the street from the facility of a circle come any point on the circle.
PerimeterThe sum of the next lengths the a closed airplane figure.
piThe proportion of the one of a circle to its diameter, denoted by the Greek letter π.
CircumferenceThe distance about the circle.

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DiameterA segment that passes through the center of a circle and also whose endpoints space on the circle, or the size of together a segment.