Download 1 OBJECTIVE:ааYou will learn to identify corresponding parts of

Warm up: p. 202
"Quiz 1"
OBJECTIVE: You will learn to identify corresponding parts of congruent triangles.
Section 5­4
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congruent triangles ­­
corresponding parts ­­
B
A
F
E
C
D
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Corresponding Parts of Congruent Triangles are Congruent
(CPCTC)
If the corresponding parts of two triangles are congruent, then the two triangles are congruent.
Example 1: If PQR = MLN, name the congruent angles and sides.
N
Q
L
P
R
M
Example 2: The corresponding parts of two congruent triangles are marked on the figure. Write a congruence statement for the two triangles.
B
D
C
A
E
2
Example 3: RST is congruent to XYZ. Find the value of n.
T
Y
90°
S
(2n + 10 )°
50°
40°
R
X
Z
Guided Practice: 1. Explain what it means when one triangle is congruent to
another.
2. Describe how transformations are used to determine whether triangles are congruent.
If ABC = DEF, name the corresponding side or angle.
3. F
4. A
5. AC
6. EF
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7. If XYZ = EDF, name the congruent sides and angles. Then draw the triangles. Use arcs and tic marks to show the congruent sides and angles. Complete each congruence statement.
8. ABC = _________
9. CBA = _______
C
C
D
B
E
F
E
A
F
A
B
D
4
Do you have any Vocab questions?
OBJECTIVE:
HOMEWORK: p. 206 ­ 207
# 11 ­ 27, 29 ­ 34
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