Undefined term
A simple figure that is not characterized in terms of various other figures.

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CollinearPoints the lie on the same line.
PlaneA flat surface that has no thickness and also extends forever.
LineA straight path that has no thickness and extends forever.
PointA place that has no size.
CoplanarPoints the lie in the same plane.
EndpointA allude at an finish of a segment or the starting point of a ray.
RayA component of a line that starts at an endpoint and extends forever in one direction.
PostulateA statement that is embraced as true there is no proof, likewise called one axiom.
VertexThe usual endpoint that the sides of an angle.
Opposite raysTwo light ray that have actually a common endpoint and type a line.
SegmentA component of a line consisting of two endpoints and also all points in between them.
DistanceThe absolute worth of the difference of the coordinates of 2 points.
ConstructionA technique of producing a number that is thought about to be mathematically precise.
BetweenGiven 3 points A, B, and C, B is between A and also C if and only if all three of the point out lie top top the same line, and ab + BC = AC.
Coordinate planeA airplane that is split into 4 regions by a horizontal line dubbed the x-axis and a vertical line referred to as the y-axis.
CoordinateA number offered to identify the location of a point.
Congruent segmentsTwo segment that have the exact same length.
DegreeA unit of angle measure.
MidpointThe suggest that divides a segment into two congruent segments.
BisectTo divide right into two congruent parts.
AngleA number formed by 2 rays with a typical endpoint.
MeasureThe usage of units to uncover 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 two intersecting lines.
Straight angleAn angle created by two opposite light ray that actions 180°.
Acute angleAn angle the measures greater than 0° and less 보다 90°.
Right angleAn angle that procedures 90°.
Interior of an angleThe collection of all points in between the sides of an angle.
Obtuse angleAn angle the measures higher than 90° and less than 180°.
Exterior of an angleThe set of all points external an angle.
Adjacent anglesTwo angles in the same aircraft with a usual vertex and also a typical side, but no usual interior points.
Complementary anglesTwo angle whose measures have actually a sum 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 surrounding angles whose noncommon sides space opposite rays.
Congruent anglesAngles that have the same measure.
ImageA shape that outcomes from a revolution of a figure.
PreimageThe original figure in a transformation.
ReflectionA revolution across a line.
TransformationA change in the position, size, or shape of a figure.
RotationA transformation about a suggest P, such the each suggest and its image are the exact same distance indigenous P.
TranslationA revolution in which all the points of a number move the exact same distance in the exact same direction.
legOne the the two sides the the right triangle that kind the ideal angle.
AreaThe number of nonoverlapping unit squares the a provided size the will specifically cover the inner of a aircraft figure.
HypotenuseThe next opposite the ideal angle in a ideal triangle.
LengthThe distance between the two endpoints the a segment.
baseAny next of a triangle.
HeightAsegment from a crest that creates a right angle v a line containing the base.
RadiusA segment who endpoints space the center of a circle and a point on the circle, or the street from the facility of a circle come any suggest on the circle.
PerimeterThe amount of the next lengths the a closed aircraft figure.
piThe proportion of the one of a circle come its diameter, denoted through the Greek letter π.
CircumferenceThe distance around the circle.

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DiameterA segment the passes through the facility of a circle and also whose endpoints room on the circle, or the size of together a segment.