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Terms of Geometry

Match the Terms!

reflection A transformation across a line. Example: Mirror-like
postulate An automatically true statement without proof; axiom
True or False: All rays continue forever in multiple direction False: only one direction it continues forever
A_____________ is a straight path that has no thickness and extends forever. line
_______________________ are two rays that have a common endpoint and form a line. Opposite rays
A point is represented by a _____. dot
Points, lines, and planes are __________________. undefined terms
True or False: noncoplanar points lie on the same plane. False: coplanar points lie on the same plane
A segment is another name for a _______________. line segment
True or False: collinear points lie on the same line. True
coordinate A point corresponding to one and only one number on the ruler
The distance between coordinates is called ________. length
True or False: Congruent segments are segments that have the same length. True
A ____________ is a way of creating a figure that is more precise. construction
Two rays with a common endpoint have a ________. vertex
Translation slide
Reflecting across the x-axis (x,y)>(x,-y)
Reflecting across the y-axis (x,y)>(-x,y)
Reflecting across y=x (x,y)>(y,x)
The method for translation by a vector Ex: (x,y)>(x+a,y+b)
What angle do you rotate the figure if the method is (x,y)>(-x,-y)? 180 degrees
What is the method for rotating a figure 90 degrees? (x,y)>(-y,x)
True or False: Plane symmetry only goes for 2-D figures. False: 3-D
True or False: If planes intersect they only do in a straight line. True
What are 2 real world examples of two planes intersecting each other? A wall, table, etc.
Created by: Twisted Hours97