Right Triangle Congruence Theorems
Lesson 6.1
Skills Practice
Name
Date
Time to Get Right
Right Triangle Congruence Theorems
Vocabulary
Choose the diagram that models each right triangle congruence theorem.
1. Hypotenuse-Leg (HL) Congruence Theorem
a.
X
Y
R
b
Q
P
Z
2. Leg-Leg (LL) Congruence Theorem
b.
U
V
W
d
X
3. Hypotenuse-Angle (HA) Congruence Theorem ???? c.
E
F
a
? Carnegie Learning
G
I
4. Leg-Angle (LA) Congruence Theorem
H
d.
6
W
T
c
U
X
V
Y
Chapter 6 Skills Practice
587
Lesson 6.1
Skills Practice
page 2
Problem Set
Mark the appropriate sides to make each congruence statement true by the Hypotenuse?Leg
Congruence Theorem.
1. «±DPR ªß «±QFM
R
2. «±ACI ªß «±GCE
A
M
I
C
F
D
E
Q
P
G
3. «±QTR ªß «±SRT
T
4. «±ADG ªß «±HKN
Q
D
A
S
N
K
R
H
G
Mark the appropriate sides to make each congruence statement true by the Leg?Leg
Congruence Theorem.
5. «±BZN ªß «±TGC
6. «±MNO ªß «±QPO
G
T
N
P
B
O
6
Z
C
7. «±PZT ªß «±PZX
M
Q
8. «±EGI ªß «±ONQ
P
E
G
N
I
Q
O
T
Z
X
588
Chapter 6 Skills Practice
? Carnegie Learning
N
Lesson 6.1
Skills Practice
page 3
Name
Date
Mark the appropriate sides and angles to make each congruence statement true by the
Hypotenuse?Angle Congruence Theorem.
9. «±SVM ªß «±JFW
10. «±MSN ªß «±QRT
W
F
V
P
J
S
N
T
M
S
11. «±IEG ªß «±IEK
M
Q
R
12. «±DCB ªß «±ZYX
E
G
Y
D
B
I
X
K
C
Z
Mark the appropriate sides and angles to make each congruence statement true by the Leg?Angle
Congruence Theorem.
13. «±XTD ªß «±HPR
14. «±SEC ªß «±PEC
P
X
T
S
R
? Carnegie Learning
T
C
D
D
E
6
H
P
R
Chapter 6 Skills Practice
589
Lesson 6.1
Skills Practice
15. «±PBJ ªß «±OTN
page 4
16. «±AXT ªß «±YBU
P
A
X
B
Y
B
J
T
O
T
U
N
For each figure, determine if there is enough information to prove that the two triangles are congruent.
If so, name the congruence theorem used.
___
___
___
17. Given: GF
? ?bisects /RGS, and
18. Given: DV
? ?ªÈ TU
? ?
/R and /S are right angles. Is nDVT > nDVU?
Is nFRG > nFSG?
G
D
S
R
T
V
U
F
es. There is enough information
Y
to conclude that nFRG > nFSG
by HA.
____
____ ____
No. nDVT might not be
?? congruent to nDVU. There is
?? not enough information.
____
___
___
19. Given: NM
? ?> EM
? ?, DM
? ?> OM
? ?, and
20. Given: RP
? ?> QS
? ?, and /R and /Q
/NMD and /EMO are right angles. are right angles.
N
O
6
M
E
Chapter 6 Skills Practice
S
P
Q
D
es. There is enough information to
Y
conclude that nNMD > nEMO by LL.
590
R
Yes. There is enough information to
?? conclude that nSRP > nPQS by HL.
? Carnegie Learning
Is nNMD > nEMO? Is nSRP > nPQS?
Lesson 6.1
Skills Practice
page 5
Name
Date
____
____
___
____
21. Given: GO
? ?> MI
? ?, and /E and /K are
22. Given: HM
? ?> VM
? ?, and /H and /V are
right angles. right angles.
Is nGEO > nMKI? Is nGHM > nUVM?
E
G
I
G
H
M
O
M
K
V
U
o. nGEO might not be congruent to
N
nMKI. There is not enough information.
Yes. There is enough information to
?? conclude that nGHM > nUVM by LA.
Use the given information to answer each question.
23. T
wo friends are meeting at the library. Maria leaves her house and walks north on Elm Street and then
east on Main Street to reach the library. Paula leaves her house and walks south on Park Avenue and
then west on Main Street to reach the library. Maria walks the same distance on Elm Street as Paula
walks on Main Street, and she walks the same distance on Main Street as Paula walks on Park
Avenue. Is there enough information to determine whether Maria¡¯s walking distance is the same as
Paula¡¯s walking distance?
Paula¡¯s house
Park Avenue
N
W
E
S
Elm Street
? Carnegie Learning
Main Street
Library
Maria¡¯s house
Yes. Maria¡¯s walking distance to the library is equal to Paula¡¯s walking distance. The triangles
formed are right triangles. The corresponding legs of the triangles are congruent. So, by the
Leg-Leg Congruence Theorem, the triangles are congruent. If the triangles are congruent, the
hypotenuses are congruent.
Chapter 6 Skills Practice
6
591
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