Unit 4 Triangle Congruence Review

Front

What is the definition of congruence in geometry?

Back

Two figures are congruent if they have the same shape and size, meaning all corresponding sides and angles are equal.

Front

What does the Vertical Angle Theorem state?

Back

The Vertical Angle Theorem states that when two lines intersect, the opposite (vertical) angles are equal.

Front

What is the Reflexive Property?

Back

The Reflexive Property states that any geometric figure is congruent to itself.

Front

What is the definition of a midpoint?

Back

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

Front

What is the definition of an angle bisector?

Back

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

Front

What are the classifications of triangles based on angles?

Back

Triangles can be classified as acute (all angles < 90°), right (one angle = 90°), or obtuse (one angle > 90°).

Front

What are the classifications of triangles based on sides?

Back

Triangles can be classified as scalene (no sides equal), isosceles (two sides equal), or equilateral (all sides equal).

Front

How do you determine if a triangle is isosceles using coordinates?

Back

Calculate the lengths of all sides using the distance formula. If two lengths are equal, the triangle is isosceles.

Front

What is the Distance Formula?

Back

Front

What is the Alternate Interior Angles Theorem?

Back

The Alternate Interior Angles Theorem states that if two parallel lines are cut by a transversal, then each pair of alternate interior angles is equal.