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Proving Triangles Congruent
Geometry
Ch 04
A BowerPoint Presentation
SSS (Side-Side-Side)
If AB
XY & BC
Then
ABC
YZ & AC
XYZ
XZ
SSS (Side-Side-Side)
If AB
XY & BC
Then
ABC
YZ & AC
XYZ
XZ
SSS (Side-Side-Side)
If AB
XY & BC
Then
ABC
YZ & AC
XYZ
XZ
SSS (Side-Side-Side)
If AB
XY & BC
Then
ABC
YZ & AC
XYZ
XZ
SSS (Side-Side-Side)
If AB
XY & BC
Then
ABC
YZ & AC
XYZ
XZ
SAS (Side-Angle-Side)
If AB
XY &
Then
A
ABC
X & AC
XYZ
XZ
SAS (Side-Angle-Side)
If AB
XY &
Then
A
ABC
X & AC
XYZ
XZ
SAS (Side-Angle-Side)
If AB
XY &
Then
A
ABC
X & AC
XYZ
XZ
SAS (Side-Angle-Side)
If AB
XY &
Then
A
ABC
X & AC
XYZ
XZ
SAS (Side-Angle-Side)
The
angles must be
included between
the two
pairs of sides
ASA (Angle-Side-Angle)
If
A
X & AB
Then
ABC
XY &
B
XYZ
Y
ASA (Angle-Side-Angle)
If
A
X & AB
Then
ABC
XY &
B
XYZ
Y
ASA (Angle-Side-Angle)
If
A
X & AB
Then
ABC
XY &
B
XYZ
Y
ASA (Angle-Side-Angle)
If
A
X & AB
Then
ABC
XY &
B
XYZ
Y
ASA (Angle-Side-Angle)
The
sides must be
included between
the two
pairs of angles
AAS (Angle-Angle-Side)
If
A
X&
Then
B
Y & AC
ABC
XYZ
XZ
AAS (Angle-Angle-Side)
If
A
X&
Then
B
Y & AC
ABC
XYZ
XZ
AAS (Angle-Angle-Side)
If
A
X&
Then
B
Y & AC
ABC
XYZ
XZ
AAS (Angle-Angle-Side)
If
A
X&
Then
B
Y & AC
ABC
XYZ
XZ
AAS (Angle-Angle-Side)
The
sides are not
included between
the two
pairs of angles
Proving Triangles Congruent
• SSS
– Side-Side-Side
• SAS
– Side-Angle-Side
• ASA
– Angle-Side-Angle
• AAS
– Angle-Angle-Side
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