Download Congruent Triangles

Congruent
Triangles
Geometry
Ms. Hough
4-3
Vocabulary
• Two triangles are called congruent
triangles if and ONLY if all 3 sides
are congruent AND all three angles
are congruent.
F
B
A
C E
G
Example 1
1) Name the
corresponding
congruent angles
and sides. Q
2) Name the
congruent
Triangles
R
S
T
V
Congruent Triangles are
Reflexive, Symmetric and
Transitive
Reflexive
Symmetric
Transitive
Transformations
Even if you move a congruent triangle,
it is still congruent to the original
triangle.
Transformation on a
Coordinate Plane
The vertices of ΔCDE are C(-5, 7),
D(-8,6) and E(-3, 3). The vertices of
ΔC’D’E’ are C’(5, 7), D’(8, 6) and
E’(3, 3).
Verify that ΔCDE
 ΔC’D’E’.
Today…
• Class Work:
4-3 Study Guide and Intervention
BOTH SIDES ODDS
• Homework:
Page 220, Problems 1-7