Term

Definition
A triangle with three angles measuring less than 90 degrees. 


Term

Definition
In an isosceles triangle, it is the side opposite the vertex angle 


Term
Congruence transformation 

Definition
When a geometric figure and its transformation image are congruent such as a slide , rotation or flip 


Term

Definition
Triangles that have their corresponding parts congruent 


Term

Definition
A statement that can be easily proven using a theorem. 


Term

Definition
Triangles with all three angles congruent 


Term

Definition
Triangles with all three sides congruent 


Term

Definition
An angle that forms a linear pair with one of the angles of a polygon 


Term

Definition
In a triangle, the side between two angles 


Term

Definition
A closed figure in a plane that is made up of segments that intersect only at their endpoints. 


Term

Definition
The name of the endpoints of a triangle. 


Term

Definition
A line of line segment added to a given figure to help in proving a result. 


Term

Definition
In an isosceles triengle, they are the angles opposite the congruent sides. 


Term

Definition
In a triangle, the angle formed by two sides 


Term

Definition
A triangle with at least two sides congruent 


Term

Definition
The two congruent sides of an isosceles triangle. 


Term

Definition
A triangle with one angle greater than 90 degrees 


Term

Definition
The angles of a triangle that are not adjacent to a given exterior angle 


Term

Definition
A triangle with one angle measuring exactly 90 degrees 


Term

Definition
A triangle with no two sides congruent 


Term

Definition
The name of the segments that form a triangle 


Term

Definition
A figure formed by the segment determined by three noncollinear points. 


Term

Definition
A figure formed by the segment determined by three noncollinear points. 


Term

Definition
In an isosceles triangle, the angle formed by the congruent sides 

