Triangle Congruence Flashcard

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines it intersects. They are congruent when the lines are parallel.

Front

What is the Midpoint of a line segment?

Back

The point that divides the segment into two equal parts.

Front

What does ASA stand for in triangle congruence?

Back

Angle-Side-Angle; a method to prove triangles are congruent by showing two angles and the included side are equal.

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side; a method to prove triangles are congruent by showing two sides and the included angle are equal.

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side; a method to prove triangles are congruent by showing all three sides are equal.

Front

What does HL stand for in triangle congruence?

Back

Hypotenuse-Leg; a method to prove right triangles are congruent by showing the hypotenuse and one leg are equal.

Front

What is the Reflexive Property?

Back

A property stating that any geometric figure is congruent to itself.

Front

What is the significance of Vertical Angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always congruent.

Front

What is the difference between AAS and ASA?

Back

AAS (Angle-Angle-Side) proves triangles are congruent by showing two angles and a non-included side are equal, while ASA requires the included side.

Front

What is the SSA condition in triangle congruence?

Back

Side-Side-Angle; this condition does not guarantee triangle congruence.