Download 4.2 Triangle Congruence by SSS and SAS

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Good
Morning!
Hand in your
homework.
Grab a Warm
Up.
Smile.
4.2 Triangle Congruence by AAS and HL
Objective:
To prove two triangles congruent using all 5 Postulates
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The 5 Ways
Prove Triangles Congruent
SSS
SAS
ASA
AAS
HL
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Agenda
 1. WARM
 2. HW
 3. HL
UP (ASA and AAS Practice)
Check (15 min)
Notes (30 min)
 4. Practice!
(30 min)
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Hypotenuse-Leg Postulate
HL
If the hypotenuse and a leg of one right
triangle are congruent to the hypotenuse
and a leg of another right triangle, then
the triangles are congruent.
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Be on the LOOKOUT!
1.Vertical Angles are
congruent
1.Shared sides are
congruent
2.Parallel lines –alt.
interior angles are
congruent
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Mixed Practice – Using the 5
Postulates can you prove the triangles
congruent?
1.
2.
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Mixed Practice –Can you prove the
triangles congruent?
3.
4.
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Corresponding Parts of Congruent Triangles are Congruent
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Practice
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Matching
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E Block
Sam
Elizabeth
Mike H.
Matt
Gavin
Nick P.
Jesus
Mariah
Brian
Cris
Patrick
Jocelyn
Mike F.
Joey
Kathleen
Nicole
Callie
Caroline
Claire
Nick S.