###
equidistant

equal or same distance

###
point

simplest term in geometry

distinct spot of identification

###
line

infinite number of points. Continues indefinitely in both directions

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plane

extends without ending and has no thickness

###
collinear

points on the same line

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coplanar

points on the same plane

###
intersection

two lines, rays, segments that meet or cross

###
noncollinear points

points not on the same line

###
segment

two points on the line and all the points between them. The two points are called the endpoints

###
ray

has one endpoint and continues to infinity in one direction

###
postulate

statement accepted as true

###
angle

formed by intersection of two rays

###
opposite rays

rays sharing a common endpoint but going in opposite directions

###
congruent

of equal or same measure

###
midpoint of a segment

a point which divides a segment in two equal smaller segments

###
bisector of a segment

is a line, segment, or ray or plane that intersects the segment at its midpoint

###
sides of an angle

the two rays which make up the angle

###
vertex

point at which two rays meet to form an angle.

###
acute angle

measure between 0 and 90

###
right angle

measures 90 degrees exactly

###
obtuse angle

measures between 90 and 180 degrees

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straight angle

measures 180 degrees exactly. A straight line is a straight angle

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protractor

measures the size of an angle

###
congruent angles

angles that have the same measure

###
adjacent angles

angles with a common side and common vertex

###
bisector of an angle

is the ray that divides the angle into two congruent adjacent angles

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