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# Geometry 2/2

inductive reasoning look for a pattern, make a conjecture using examples, use logical reasoning to verify the ocnjecture.
attributes a way to characterize items based on these items having the same characteristics
congruent figures two figures that have the same shape and size
similar figures same shape
if 2 figures are congruant, then they are ___ similar
not always congurant if _____ similar
line symmetry figure can be divided into 2 parts, each of which is the mirror image of the other
rotational symmetry the figure is rotated 0 to 180 degrees about its center and the resting figure coincided with the original
optical illusions when your eyes see something differently or are tricked into believing something is true when it's not
point can be thought of as a dot that represents a location in a plan or space
line an infinite number of points extending in both directions
plane a flat surgace that extends infinitely in all directions
segment a part of a line having two endpoints
ray a part of a line having one endpoint
angle consists of two different rays that have the same inital point called the vertex
opposite rays two rays with a common endpoint going in opposite directions
adjacent angles two angles that share a common vertex and side but have no common interior points
bisect to cut an object into 2 congruent parts
segment bisector a segment that bisects another segment into 2 congruent segments
angle bisector a ray that bisects an angle into 2 congruent angles
midpoint the point that divides a segment into 2 congruent parts
collinear points on the same line
coplanar points on the same plane
exterior points points contained outside an angle
interior points points contained inside an angle
parallel lines 2 or more coplanar lines traveling in the same direction and never intersect
perpendicular lines 2 coplanar lines that intersect to form 90 degree angles
postulate a statement that is accepted as true without proof
theorem a rule that has been proven
segment addition postulate if B is between A, then AB + BC = AC
Angle addition postulate if C is in the interior of angle AOD, then Angle AOC + COD = AOD
Created by: Ljg1237