Term

Definition
An angle that is between 0 and 90 degrees 


Term

Definition
Two coplanar angles with a common side and a common vertex. 


Term

Definition
An angle is formed by two rays with the same endpoint (called the vertex of the angle).
You can name an angle by its vertex if that vertex doesn't belong to any other angles, or you can name it by three points, with the middle point being the vertex and each of the other two points being a point on each of the two rays. 


Term

Definition
A ray that divides an angle into two congruent angles. 


Term

Definition
Points that lie on the same line. 


Term

Definition
A geometric tool used to draw circles and parts of circles called arcs. 


Term

Definition
Two angles, the sum of whose measure is 90 degrees. 

