Lessons: Naming Points, Lines, and Angles E
One of the most important aspects in Geometry
One of the most important aspects in Geometry
is how to name things.
One of the most important aspects in Geometry
is how to name things.
One of the most important aspects in Geometry
This is a point
is how to name things.
One of the most important aspects in Geometry
We can name the point using capital letters.
is how to name things.
One of the most important aspects in Geometry
We can name the point using capital letters.
is how to name things.
A
One of the most important aspects in Geometry
We can name the point using capital letters.
is how to name things.
This is point A.
A
What is the name of this point?
A
B
Z
John Cena
Z
We also can name lines
We also can name lines
We also can name lines
This is a line
We also can name lines
This is a line
a line goes forever in both directions
We also can name lines
forever this way
This is a line
a line goes forever in both directions
We also can name lines
forever this way
This is a line
a line goes forever in both directions
forever that way
We also can name lines
This is a line
We can name a line by two points on the line
a line goes forever in both directions
We also can name lines
This is a line
We can name a line by two points on the line
a line goes forever in both directions
A
We also can name lines
This is a line
We can name a line by two points on the line
a line goes forever in both directions
A
B
We also can name lines
This is a line
We can name a line by two points on the line
a line goes forever in both directions
A
line AB
B
We also can name lines
This is a line
We can name a line by two points on the line
a line goes forever in both directions
A
a line has this symbol
line AB
B
over the
name
XY
YZ
AB
John Cena
X
Y
What is the name of 
this line?
A
B
What is the name of this line?
BA
BA
BA
John Cena
What is the name of this line?
(Check all that apply)
 AB
AB
BA
BA
A
B
A line segment is a piece of the line
A
B
A line segment is a piece of the line
A
piece of the line
B
A line segment is a piece of the line
and is named by the starting and ending points
A
B
A line segment is a piece of the line
and is named by the starting and ending points
starting point
A
B
A line segment is a piece of the line
and is named by the starting and ending points
starting point
A
ending point
B
A line segment is a piece of the line
and is named by the starting and ending points
line segment AB
starting point
A
ending point
B
A line segment is a piece of the line
and is named by the starting and ending points
line segment AB
starting point
A
line segments
have this symbol
ending point
B
over their name
What is the name of this line segment?
A
BA
BA
BA
John Cena
B
Rays are parts of lines that go forever in only
Rays are parts of lines that go forever in only
ONE DIRECTION!
Rays are parts of lines that go forever in only
ONE DIRECTION!
Rays are parts of lines that go forever in only
ONE DIRECTION!
Rays are parts of lines that go forever in only
To name a ray, name the starting point
ONE DIRECTION!
Rays are parts of lines that go forever in only
To name a ray, name the starting point
A
ONE DIRECTION!
Rays are parts of lines that go forever in only
To name a ray, name the starting point
and another point on the ray
A
ONE DIRECTION!
Rays are parts of lines that go forever in only
To name a ray, name the starting point
and another point on the ray
A
ONE DIRECTION!
B
Rays are parts of lines that go forever in only
To name a ray, name the starting point
and another point on the ray
A
ONE DIRECTION!
B
AB
What is the name
of this ray?
Y
XY
XY
YX
YX
X
Angles
Angles
Angles
are named by three
points that
trace out
the angle's
V shape
Angles
B
C
A
are named by three
points that
trace out
the angle's
V shape
Angles
∡ ABC
B
C
A
are named by three
points that
trace out
the angle's
V shape
Angles
∡ ABC
B
or
C
A
are named by three
points that
trace out
the angle's
V shape
Angles
∡ ABC
B
or
∡CBA
C
A
are named by three
points that
trace out
the angle's
V shape
Angles
∡ ABC
B
1
or
∡CBA
C
A
or 
are named by three
points that
trace out
the angle's
V shape
Angles
∡ ABC
B
1
or
∡CBA
C
A
or 
are named by three
∡B
points that
trace out
the angle's
V shape
Angles
∡ ABC
B
1
or
∡CBA
C
A
or 
are named by three
∡B
points that
or 
trace out
the angle's
V shape
Angles
∡ ABC
B
1
or
∡CBA
C
A
or 
are named by three
∡B
points that
or 
trace out
the angle's
∡1
V shape
Name ∡3
Y
3
Z
X
∡XYZ
∡XZY
 ∡YXZ
∡YZX
∡ZXY
∡ZYX
Mark all that apply
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