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# In the figure above, if BD bisects ∠ABC, then the measure of ∠BDC is

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Math Expert
Joined: 02 Sep 2009
Posts: 55631
In the figure above, if BD bisects ∠ABC, then the measure of ∠BDC is  [#permalink]

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25 Dec 2018, 07:54
00:00

Difficulty:

25% (medium)

Question Stats:

70% (00:55) correct 30% (00:42) wrong based on 23 sessions

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In the figure above, if BD bisects ∠ABC, then the measure of ∠BDC is

A. 50°
B. 90°
C. 100°
D. 110°
E. 120°

Attachment:

2018-12-25_1852.png [ 12.91 KiB | Viewed 297 times ]

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Joined: 04 Jun 2018
Posts: 19
Location: Viet Nam
GMAT 1: 610 Q47 V27
WE: Supply Chain Management (Internet and New Media)
Re: In the figure above, if BD bisects ∠ABC, then the measure of ∠BDC is  [#permalink]

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25 Dec 2018, 08:14
∠ABC = 180° - 30° - 50° = 100°
BD bisects ∠ABC => ∠DBC = 50° => ∠BDC = 180° - 50° - 30° = 100°

Re: In the figure above, if BD bisects ∠ABC, then the measure of ∠BDC is   [#permalink] 25 Dec 2018, 08:14
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