Geometric Term
Example
A point is an exact
location in space.
A
A line is a straight
path of points that
goes on and on in
opposite directions.
A line segment is
part of a line with
two endpoints.
A ray is a part of a line
that has one endpoint
& continues on forever
in one direction.
B
C
D
Label
What You Say
point A
Point A
BC
Line BC
Line CB
CB
E
DE
NP
F
G
A ray is named with its
endpoint first.
Line Segment DE
Ray NP
Geometric Term
Intersecting lines
are lines that cross
at exactly one point.
Intersecting lines
form four angles.
Parallel lines are
lines that are always
the same distance
apart. Parallel lines
NEVER intersect.
Perpendicular lines
are lines that
intersect to form
four right angles.
Example
H
Label
K
X
J
L
D
E
F
G
M
P
N
O
HL and JK
intersect at
point X.
Line DE is parallel
What You Say
Line HL intersects
Line JK at point X.
Line DE is parallel
to line FG.
to Line FG.
Line MN is
perpendicular to
Line NP.
Line MN is
perpendicular to
Line NP.
The difference between intersecting and parallel lines is :
●
●
intersecting lines make 2 acute angles and 2 obtuse angles.
perpendicular lines make 4 right angles.
Parallel
P e r pe n d i c u l a r
I
G
H
t
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