Undefined term
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A straightforward figure that is not characterized in state of various other figures.

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CollinearPoints the lie ~ above the very same line.
PlaneA flat surface that has no thickness and also extends forever.
LineA straight course that has actually no thickness and also extends forever.
PointA location that has actually no size.
CoplanarPoints the lie in the exact same plane.
EndpointA allude at an finish of a segment or the starting point that a ray.
RayA component of a line that starts in ~ an endpoint and also extends forever in one direction.
PostulateA statement the is embraced as true there is no proof, additionally called one axiom.
VertexThe typical endpoint of the sides of one angle.
Opposite raysTwo rays that have a typical endpoint and kind a line.
SegmentA component 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 developing a number that is considered to it is in mathematically precise.
BetweenGiven three points A, B, and also C, B is between A and C if and also only if all 3 of the points lie top top the exact same line, and abdominal + BC = AC.
Coordinate planeA airplane that is split into 4 regions by a horizontal line dubbed the x-axis and also a vertical line dubbed the y-axis.
CoordinateA number supplied to determine the ar of a point.
Congruent segmentsTwo segment that have the exact same length.
DegreeA unit of edge measure.
MidpointThe allude that divides a segment right into two congruent segments.
BisectTo divide into two congruent parts.
AngleA number formed by 2 rays through a typical endpoint.
MeasureThe usage of units to find a dimension or quantity.
Segment bisectorA line, ray, or segment the divides a segment into two congruent segments.
Vertical anglesThe nonadjacent angles developed by 2 intersecting lines.
Straight angleAn angle developed by 2 opposite beam that actions 180°.
Acute angleAn angle the measures higher than 0° and also less 보다 90°.
Right angleAn angle that measures 90°.
Interior of an angleThe collection of all points between the political parties of one angle.
Obtuse angleAn angle that measures higher than 90° and also less than 180°.
Exterior of one angleThe set of every points exterior an angle.
Adjacent anglesTwo angles in the same aircraft with a common vertex and a typical side, yet no common interior points.
Complementary anglesTwo angles whose measures have actually a amount of 90°.
Supplementary anglesTwo angle whose measures have actually a amount of 180°.
Angle bisectorA beam that divides an angle into two congruent angles.
Linear pairA pair of nearby angles who noncommon sides space opposite rays.
Congruent anglesAngles that have actually the same measure.
ImageA shape that outcomes from a transformation of a figure.
PreimageThe original figure in a transformation.
ReflectionA change across a line.
TransformationA readjust in the position, size, or form of a figure.
RotationA transformation about a point P, such the each point and its image are the same distance indigenous P.
TranslationA transformation in which all the point out of a figure move the same distance in the exact same direction.
legOne of the two sides the the best triangle that type the appropriate angle.
AreaThe number of nonoverlapping unit squares of a provided size the will specifically cover the inner of a aircraft figure.
HypotenuseThe side opposite the right angle in a appropriate triangle.
LengthThe distance between the two endpoints of a segment.
baseAny next of a triangle.
HeightAsegment from a crest that creates a right angle with a line containing the base.
RadiusA segment whose endpoints room the facility of a circle and also a suggest on the circle, or the street from the facility of a circle come any allude on the circle.
PerimeterThe sum of the next lengths the a closed plane figure.
piThe ratio of the circumference of a circle to its diameter, denoted through the Greek letter π.
CircumferenceThe distance roughly the circle.

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