Successfully reported this slideshow.
Upcoming SlideShare
×

of

32

Share

# Midline theorem - Mathematics - Geometry

Midline Theorem
*Fun Activities
*Short Quiz

See all

See all

### Midline theorem - Mathematics - Geometry

1. 1. THE MIDLINE THEOREM
2. 2. MIDLINE THEOREM οThe segment that joins the midpoints of two sides of a triangle is parallel to the third side and half as long.
3. 3. A B C D E In βABC, D and E are the midpoints of π΄π΅ and π΄πΆ respectively. Complete the following statements: ο§ DE = ______ ο§ AD = ______ ο§ AE = ______ π π BC BD CE
4. 4. In βABC, D and E are the midpoints of π΄π΅ and π΅πΆ respectively. Fill in the blanks. 1. If DE = 12, then AC = _____. 2. If AC =42, then DE = _____. 3. If AD = 7, then AB = _____. 4. If BC = 36, then BE = _____. 5. If BD = 8 and EC = 9, then AB + BC = _____. D A C B E 24 21 14 18 34 15
5. 5. In βMCG, A and I are the midpoints of ππΊ and πΊπΆ respectively. M C G A I Given: AI = 3x β 2 CM = 9x β 13 Question: How long is CM? Given: AG = 2y - 1 AM = y + 5 Question: How long is AG?
6. 6. CHOOSE A BRIEFCASE QUIZ
7. 7. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E If DE = 13, then π π DG = _____ TIME IS UP!!! 13
8. 8. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E TIME IS UP!!! 51 If BE = 17, then BE + OG = _____
9. 9. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E Given: BE = 2x + 5 OG = 5x + 6 Question: How long is BE? TIME IS UP!!! 13
10. 10. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E TIME IS UP!!! 6 If OG = 36, then π π BE = _____
11. 11. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E Given: BD = 3a + 3 BO = 7a - 21 Question: How long is BO? TIME IS UP!!! 21
12. 12. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E TIME IS UP!!! 11 If DO = 44, then π π BD = _____
13. 13. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E Given: DE = 2y + 1 EG = 3y - 7 Question: How long is EG? TIME IS UP!!! 17
14. 14. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E TIME IS UP!!! 12 If BE = 6, then GO = _____.
15. 15. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E Given: BE = 4b - 7 GO = 5b - 5 Question: How long is GO? TIME IS UP!!! 10
16. 16. In βDOG, B and E are the midpoints of π·π and π·πΊ respectively. B O G D E TIME IS UP!!! 45 If OB = 15, and GE = 13, then DO + BD = _____.
17. 17. Letβs see how well did you understand our lesson. Short Quiz
18. 18. In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. B U V L E If LE = 19, then π π LV = _____ 1
19. 19. B U V L E If BE = 21, then BE + UV = _____ In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 2
20. 20. B U V L E Given: BE = 2x - 1 UV = x + 4 Question: How long is BE? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 3
21. 21. B U V L E If UV = 32, then π π BE = _____ In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 4
22. 22. B U V L E Given: BL = 2a - 1 BU = 4a - 17 Question: How long is BU? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 5
23. 23. B U V L E If LU = 56, then π π BL = _____ In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 6
24. 24. B U V L E Given: EL = 2y + 14 EV = 5y - 16 Question: How long is EV? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 7
25. 25. B U V L E If BE = 13.8, then UV = _____. In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 8
26. 26. B U V L E Given: BE = 3b - 7 UV = 4b + 8 Question: How long is UV? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 9
27. 27. B U V L E If BU = 17, and EV = 14, then LU + LV = _____. In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 10
29. 29. In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. B U V L E If LE = 19, then π π LV = _____ 1 19
30. 30. B U V L E If BE = 21, then BE + UV = _____ In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 2 63
31. 31. B U V L E Given: BE = 2x - 1 UV = x + 4 Question: How long is BE? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 3 3
32. 32. B U V L E If UV = 32, then π π BE = _____ In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 4 4
33. 33. B U V L E Given: BL = 2a - 1 BU = 4a - 17 Question: How long is BU? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 5 15
34. 34. B U V L E If LU = 56, then π π BL = _____ In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 6 14
35. 35. B U V L E Given: EL = 2y + 14 EV = 5y - 16 Question: How long is EV? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 7 34
36. 36. B U V L E If BE = 13.8, then UV = _____. In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 8 27.6
37. 37. B U V L E Given: BE = 3b - 7 UV = 4b + 8 Question: How long is UV? In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 9 52
38. 38. B U V L E If BU = 17, and EV = 14, then LU + LV = _____. In βLUV, B and E are the midpoints of πΏπ and πΏπ respectively. 10 62

Apr. 17, 2021
• #### IvanOliveros5

Apr. 16, 2021
• #### JaniceCasiano

Apr. 14, 2021
• #### ElaineCorpuz4

Apr. 10, 2021

Apr. 6, 2021

Mar. 5, 2021
• #### LiezelCarpio

Aug. 20, 2020
• #### MarieMijares

Feb. 27, 2020
• #### ivymendrez

Nov. 27, 2019
• #### odettegayoba

Nov. 24, 2019
• #### JonasSaint

Nov. 24, 2019
• #### cerylsantos

Nov. 21, 2019
• #### wilmacabreros16

Nov. 18, 2019
• #### arveesanson126

Nov. 13, 2019
• #### JansenManantan

Nov. 10, 2019
• #### DeliaUlita

Feb. 25, 2019

Feb. 8, 2019

Feb. 5, 2019
• #### GlendeLuna

Jan. 13, 2019
• #### sheidy25

Jan. 8, 2019

Midline Theorem *Fun Activities *Short Quiz

Total views

28,183

On Slideshare

0

From embeds

0

Number of embeds

12

551

Shares

0