1st Semester Geometry Vocab

Front

What is a 'Line Segment'?

Back

A part of a line with two endpoints.

Front

Define a scalene triangle.

Back

A triangle with no equal sides.

Front

What are the Triangle Congruence Theorems?

Back

Theorems that determine if two triangles are congruent based on their sides and angles: SSS, SAS, ASA, AAS, and HL.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side: If three sides of one triangle are equal to three sides of another triangle, the triangles are congruent.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side: If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

Front

What does ASA stand for in triangle congruence?

Back

Angle-Side-Angle: If two angles and the included side of one triangle are equal to two angles and the included side of another triangle, the triangles are congruent.

Front

What does AAS stand for in triangle congruence?

Back

Angle-Angle-Side: If two angles and a non-included side of one triangle are equal to two angles and the corresponding non-included side of another triangle, the triangles are congruent.

Front

What does HL stand for in triangle congruence?

Back

Hypotenuse-Leg: In right triangles, if the hypotenuse and one leg of one triangle are equal to the hypotenuse and one leg of another triangle, the triangles are congruent.

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.