Definitions
Two rays joined at a common endpoint called the vertex
What is an angle?
This symbol has arrows on both sides
What is a line?
Has no size but names a place
What is a point?
segment AB
What is segment AB?
In <ABC, B is the ___
What is the vertex?
Part of a line which has two endpoints.
What is a line segment?
This symbol looks like a dash over two letters
What is the symbol for a line segment?
It goes on forever in two directions
What is a line?
Line DC
What is line DC?
In <ABC, the sides are ___
What are rays BA and BC?
It is part of a line which has an endpoint and travels through at least one point on the line.
What is a ray?
Looks like a less than sign
What is the symbol for an angle?
It is like a flat surface but has no thickness
What is a plane?
Ray NR
What is ray NR?
I have less than 90 degrees but more than 0.
What is an acute angle?
These have a common side and a common endpoint
What are adjacent angles?
It looks like s dash with a point on one side & an arrow on the other side
What is the name of a ray?
It has a beginning & an end
What's a segment?
Opposite rays NR and NC
What are opposite rays?
I am more the 90 degrees but less than 180 degrees
What is an obtuse angle?
These three things have no definitions at all in geometry
What are points, lines and planes?
A capital letter
What is the name of a point?
It has an endpoint and goes on endlessly in one direction
What is a ray
Two adjacent angles named <1 and <2
What are adjacent angles?
I look like the hands of a clock at noon
What is a zero degree angle?