Warm Up

1. Name all sides and angles of ∆FGH.

2. What is true about K and L? Why?

3. What does it mean for two segments to be congruent?

4.3: Congruent TriangleObjectives:

• To apply properties of congruent triangles.

• To prove triangles congruent by using the definition of congruence.

Supplies: Vocabulary notebook notes

4.3: Congruent Triangle

Diagram Corresponding Angles

Corresponding Sides

B

A

C

F

E

D

4.3: Congruent Trianglepage. 9

Consecutive Vertices

4.3: Congruent Triangle

Given: PQR STW

Identify all pairs of corresponding congruent parts,

4.3: Congruent Triangle

If ABC DBC, find the measure of each angle.

Given: YWX & YWZ are right s bisects XYZ W is the midpoint of Prove:

YWXZ

XY YZXYZ ZYW

Statements Reasons

Given:

Prove:

bisects BE AD,AB DE A D

ABC DEC Statements Reasons

bisects AD BE

4.3: Assignment

p. 234: 1-11, 13-20