The document discusses naming triangles and establishes that any combination of the letters A, B, and C can be used to name a triangle with vertices A, B, and C, as the number of vertices is small so none can be skipped when naming.

1. Example: Naming a Triangle
The triangle shown is named triangle ABC.
Can it also be named triangle ACB?
How about triangle BAC?
Is there a combination of the
letters A, B, and C that will not work to
name the triangle?
A
BC

2. Example: Naming a Triangle
The triangle shown is named triangle ABC.
Can it also be named triangle ACB?
Yes
How about triangle BAC?
Is there a combination of the letters A, B, and
C that will not work to name the triangle?
A
BC

3. Example: Naming a Triangle
The triangle shown is named triangle ABC.
Can it also be named triangle ACB?
Yes
How about triangle BAC?
Yes
Is there a combination of the letters A, B, and C
that will not work to name the triangle?
A
BC

4. Example: Naming a Triangle
The triangle shown is named triangle ABC.
Can it also be named triangle ACB?
Yes
How about triangle BAC?
Yes
Is there a combination of the letters A, B, and C
that will not work to name the triangle?
No. Any combination will work. In a
triangle, there are so few vertices that we
cannot “skip” one when naming.
A
BC