4.2.1 Triangle Congruence: SSS and SAS - Worksheet
Example 1: Use SSS to explain why the triangles in each pair are congruent. 1. △ ABD ≅ △ CDB 2. △ MNP ≅ △ MQP
M
C
B
P
N
D
A
Q
Example 2: 3. This Texas flag consists of a blue, perpendicular stripe with a white star in the center. The star consists of five triangles. GJ = LG = 20 in., and GK = GH = 13 in. Use SAS to explain why △ JGK ≅ △ LGH .
G
K
H
J
L
Example 3: Show that the triangles are congruent for the given value of the variable. 4. △ GHJ ≅ △ IHJ , x = 4
5. △ RST ≅ △ TUR , x = 18 R 61
H
S
3 x – 9
3
36°
I
G
2 x °
U
T
4 x – 11
2 x – 3
5
J
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