Find each measure. .8. VX= 9. HJ= 10. m/VXJ= 11. XJ= Find each measure. 12. ST= 13. DE= 14. m/DES= 15. m/RCD= 46 W 27 H D 48° H 92° E 36 R H C 35 for mZBJH. 44

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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Name
LESSON
5-4
Reteach
The Triangle Midsegment Theorem continued
Theorem
Triangle Midsegment Theorem
A midsegment of a triangle is parallel to
a side of the triangle, and its length is
half the length of that side.
HJ= AC A Midsegment Thm.
2
You can use the Triangle Midsegment Theorem to
find various measures in AABC.
HJ = (12) Substitute 12 for AC:
=(12)
HJ=6
Simplify.
JK ==AB A Midsegment Thm.
2
1
4= AB Substitute 4 for JK.
2
¹8 = AB
Date
Simplify.
Find each measure.
.8. VX=
9. HJ=
10. m/VXJ =
11. XJ=
Find each measure.
12. ST=
13. DE=
14. m/DES=
15. m/RCD=
N
Given: PQ is a midsegment of ALMN.
Conclusion: PQ || LN, PQ =
LN
2
HJ || AC
m/BCA
A
H
m/BCA = 35°
B
=mZBJH
=
D
Example
4
12
35°
K
27
Midsegment Thm.
Class
Corr. Thm.
Substitute 35° for mZBJH.
48°
H
92°
E
36
R
44
Original content Copyright by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
5-31
Holt Geometry
Transcribed Image Text:Name LESSON 5-4 Reteach The Triangle Midsegment Theorem continued Theorem Triangle Midsegment Theorem A midsegment of a triangle is parallel to a side of the triangle, and its length is half the length of that side. HJ= AC A Midsegment Thm. 2 You can use the Triangle Midsegment Theorem to find various measures in AABC. HJ = (12) Substitute 12 for AC: =(12) HJ=6 Simplify. JK ==AB A Midsegment Thm. 2 1 4= AB Substitute 4 for JK. 2 ¹8 = AB Date Simplify. Find each measure. .8. VX= 9. HJ= 10. m/VXJ = 11. XJ= Find each measure. 12. ST= 13. DE= 14. m/DES= 15. m/RCD= N Given: PQ is a midsegment of ALMN. Conclusion: PQ || LN, PQ = LN 2 HJ || AC m/BCA A H m/BCA = 35° B =mZBJH = D Example 4 12 35° K 27 Midsegment Thm. Class Corr. Thm. Substitute 35° for mZBJH. 48° H 92° E 36 R 44 Original content Copyright by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. 5-31 Holt Geometry
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Concept:

According to the midsegment theorem, every line segment connecting any two triangle sides' midpoints is parallel to and comprises half of the third side.
Parallel Lines are any Two or more Lines that all lie in the Same Plane and never Cross one another. Both of them have the same slope and are equally spaced apart.

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