6.1-3 Congruent Triangles

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they are the same size and same shape.

Front

What is the definition of a midpoint?

Back

A midpoint is a point that divides a segment into two equal parts.

Front

What theorem states that vertical angles are congruent?

Back

The Vertical Angle Theorem states that vertical angles are congruent.

Front

How do you write that angle ACB is congruent to angle ECD?

Back

Front

What is an angle bisector?

Back

An angle bisector is a ray that divides an angle into two equal parts.

Front

What is the Third Angles Theorem?

Back

If two angles of one triangle are congruent to two angles of another triangle, then the third angles are also congruent.

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal.

Front

What is the definition of congruent segments?

Back

Congruent segments are segments that have the same length.

Front

What is the relationship between alternate interior angles when two parallel lines are cut by a transversal?

Back

Alternate interior angles are congruent.

Front

What is a median in a triangle?

Back

A median is a segment that connects a vertex of a triangle to the midpoint of the opposite side.