1. 4-3 Congruent Triangles
Geometry

2. Congruent Figures ( )))) ))) (( ( )))) ))) (( B A ___ ___ ___ ___ D C
2 figures are congruent if they have the exact same size and shape.
When 2 figures are congruent the corresponding parts are congruent. (angles and sides)
Quad ABDC is congruent to Quad EFHG
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3. Ex. 1)
If Δ ABC is  to Δ XYZ, identify all congruent parts?

4. Ex 2.): ABCD is  to HGFE, find x and y.
9cm A B E
91o F
(5y-12)o
86o
113o D C
4x-3cm H G
X = 3, y = 25

5. Ex. 3 Given ΔABC  ΔDBC ∠A = 49.3° ∠BCA = (2x – 16)°

6. Ex. 4 Given: ∠YWX and ∠YWZ are right angles. 𝑌𝑊 bisects ∠XYZ
Ex. 4 Given: ∠YWX and ∠YWZ are right angles. 𝑌𝑊 bisects ∠XYZ. W is the midpoint of 𝑋𝑍. 𝑋𝑌 ≌ 𝑌𝑍 . Prove: ΔXYW  ΔZYW Y
X W Z