Vocab quiz Flashcards
Point
an exact location in the space and has no length, width, or thickness
Plane
a flat 2 dimensional surface that extends indefinitely
Vertex
a point where 2 or more curves, lines, or edges meet to form an angle
Angle
A figure formed by 2 rays that share a common endpoint
Parallel
Straight lines that do not intersect at any place
Postulate
A statement that is accepted as true without proof also called axiom
Transformation
A change in the position, size, or shape of a figure or graph
Image
A shape that results from a transformation of a figure known as preimage
Theorem
A statement that has been proven
Segment bisector
A line, ray, or segment that divides a segment into 2 congruent segments
Line
An undefined term in geometry a line is a straight path that has no thickness and extends forever
Line segment
Segment of a line
Midpoint
The point that divides a segment into 2 congruent segments
Obtuse angle
An angle that measures grater that 90° and less than 180°
Straight angle
A 180° angle
Right angle
An angle that measures 90°
Acute angle
An angle that measures greater that 0° and less than 90°
Ray
A part of a line that starts at an endpoint and extends forever in 1 direction
Coplanar
Points that lie in the same plane
Collinear
Points that lie on the same line
Angle bisector
A ray that divides an angle into 2 congruent angles
Preimage
The original figure In a transformation
Rigid motion
Isometry
a transformation that does not change the size or shape of a figure
Linear pair
A pair of adjacent angles whose noncommon sides are opposite rays
