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Minimum
Measurement
Congruent Triangles
Learning Goal 2(8.G.A.2, 8.G.A.3):
Apply properties of transformations to perform and
explain sequences of transformations and prove figures
are congruent
.
4
In addition to 3,
student is able
to teach others
how to apply
properties of
transformations
.
3
Apply properties
of
transformations
to perform and
explain
sequences of
transformations
and prove
figures are
congruent.
2
Apply properties
of
transformations
to perform
sequences of
transformation.
1
With help, apply
properties of
transformations
to perform
sequences of
transformation.
0
Even with help, I
am unable to
apply properties
of
transformations.
What does “corresponding” mean?
• Corresponding sides or angles means that the side or angle
appears in the same place in the other figure.
• How do you visually recognize the corresponding pairs of
sides?
• Which side of ΔPQR should match segment AC? Explain how
you know.
• Which angle is the largest angle in ΔABC? Where is the
corresponding angle in ΔPQR located?
Is there enough information?
• Can you be sure that two triangles are congruent if you know
that there is only one pair of corresponding sides are
congruent?
• Work with a partner to come up with an explanation to prove
this is true or prove it is not.
• Not enough information:
Is there enough information?
• Can you be sure that two triangles are congruent if you know
that there is only one pair of corresponding angles are
congruent?
• Work with a partner to come up with an explanation to prove
this is true or prove it is not.
• Not enough information:
Is there enough information?
• Can you be sure that two triangles are congruent if you know
that there is only two pairs of corresponding sides are
congruent?
• Work with a partner to come up with an explanation to prove
this is true or prove it is not.
• Not enough information:
Is there enough information?
• Can you be sure that two triangles are congruent if you know
that there is only two pairs of corresponding angles are
congruent?
• Work with a partner to come up with an explanation to prove
this is true or prove it is not.
• Not enough information:
Is there enough information?
• Can you be sure that two triangles are congruent if you know
that there is one pair of corresponding angles that are
congruent and one pair of corresponding sides that are
congruent?
• Work with a partner to come up with an explanation to prove
this is true or prove it is not.
• Not enough information:
Use Labsheet 2.3 to complete
the activity.